var bibbase_data = {"data":"<img src=\"//bibbase.org/img/ajax-loader.gif\" id=\"spinner\"\n  style=\"display: none;\" alt=\"Loading..\" />\n\n<div id=\"bibbase\">\n\n  <script type=\"text/javascript\">\n    var bibbase = {\n      params: {\"bib\":\"https://api.zotero.org/users/13340566/collections/IW92WSGB/items?key=pAkzpZ4NQlDX8Yl2BPBgbzZd&format=bibtex&limit=100\",\"jsonp\":\"1\",\"host\":\"bibbase.org\",\"ssl\":false},\n      data: [{\"bibtype\":\"article\",\"type\":\"article\",\"title\":\"Quantitative Nonclassicality of Mediated Interactions\",\"volume\":\"5\",\"url\":\"https://link.aps.org/doi/10.1103/PRXQuantum.5.010318\",\"doi\":\"10.1103/PRXQuantum.5.010318\",\"abstract\":\"In a plethora of physical situations, one can distinguish a mediator—a system that couples other, noninteracting, systems. Often, the mediator itself is not directly accessible to experimentation, yet it is interesting and sometimes crucial to understand if it admits nonclassical properties. An example of this sort that has recently been enjoying considerable attention is that of two quantum masses coupled via a gravitational field. It has been argued that the gain of quantum entanglement between the masses indicates nonclassicality of the states of the whole tripartite system. Here, we focus on the nonclassical properties of the involved interactions rather than the states. We derive inequalities the violation of which indicates noncommutativity and nondecomposability (open-system generalization of noncommuting unitaries) of interactions through the mediators. The derivations are based on properties of general quantum formalism and make minimalistic assumptions about the studied systems; in particular, the interactions can remain uncharacterized throughout the assessment. Furthermore, we also present conditions that solely use correlations between the coupled systems, excluding the need to measure the mediator. Next, we show that the amount of violation places a lower bound on suitably defined degree of nondecomposability. This makes the methods quantitative and at the same time experiment ready. We give applications of these techniques in two different fields: for detecting the nonclassicality of gravitational interaction and in bounding the Trotter error in quantum simulations.\",\"number\":\"1\",\"urldate\":\"2024-06-24\",\"journal\":\"PRX Quantum\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Ganardi\"],\"firstnames\":[\"Ray\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Panwar\"],\"firstnames\":[\"Ekta\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Pandit\"],\"firstnames\":[\"Mahasweta\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Woloncewicz\"],\"firstnames\":[\"Bianka\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Paterek\"],\"firstnames\":[\"Tomasz\"],\"suffixes\":[]}],\"month\":\"February\",\"year\":\"2024\",\"note\":\"Publisher: American Physical Society\",\"pages\":\"010318\",\"bibtex\":\"@article{ganardi_quantitative_2024,\\n\\ttitle = {Quantitative {Nonclassicality} of {Mediated} {Interactions}},\\n\\tvolume = {5},\\n\\turl = {https://link.aps.org/doi/10.1103/PRXQuantum.5.010318},\\n\\tdoi = {10.1103/PRXQuantum.5.010318},\\n\\tabstract = {In a plethora of physical situations, one can distinguish a mediator—a system that couples other, noninteracting, systems. Often, the mediator itself is not directly accessible to experimentation, yet it is interesting and sometimes crucial to understand if it admits nonclassical properties. An example of this sort that has recently been enjoying considerable attention is that of two quantum masses coupled via a gravitational field. It has been argued that the gain of quantum entanglement between the masses indicates nonclassicality of the states of the whole tripartite system. Here, we focus on the nonclassical properties of the involved interactions rather than the states. We derive inequalities the violation of which indicates noncommutativity and nondecomposability (open-system generalization of noncommuting unitaries) of interactions through the mediators. The derivations are based on properties of general quantum formalism and make minimalistic assumptions about the studied systems; in particular, the interactions can remain uncharacterized throughout the assessment. Furthermore, we also present conditions that solely use correlations between the coupled systems, excluding the need to measure the mediator. Next, we show that the amount of violation places a lower bound on suitably defined degree of nondecomposability. This makes the methods quantitative and at the same time experiment ready. We give applications of these techniques in two different fields: for detecting the nonclassicality of gravitational interaction and in bounding the Trotter error in quantum simulations.},\\n\\tnumber = {1},\\n\\turldate = {2024-06-24},\\n\\tjournal = {PRX Quantum},\\n\\tauthor = {Ganardi, Ray and Panwar, Ekta and Pandit, Mahasweta and Woloncewicz, Bianka and Paterek, Tomasz},\\n\\tmonth = feb,\\n\\tyear = {2024},\\n\\tnote = {Publisher: American Physical Society},\\n\\tpages = {010318},\\n}\\n\\n\",\"author_short\":[\"Ganardi, R.\",\"Panwar, E.\",\"Pandit, M.\",\"Woloncewicz, B.\",\"Paterek, T.\"],\"key\":\"ganardi_quantitative_2024\",\"id\":\"ganardi_quantitative_2024\",\"bibbaseid\":\"ganardi-panwar-pandit-woloncewicz-paterek-quantitativenonclassicalityofmediatedinteractions-2024\",\"role\":\"author\",\"urls\":{\"Paper\":\"https://link.aps.org/doi/10.1103/PRXQuantum.5.010318\"},\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Efficiently Cooling Quantum Systems with Finite Resources: Insights from Thermodynamic Geometry\",\"shorttitle\":\"Efficiently Cooling Quantum Systems with Finite Resources\",\"url\":\"http://arxiv.org/abs/2404.06649\",\"doi\":\"10.48550/arXiv.2404.06649\",\"abstract\":\"Landauer's universal limit on heat dissipation during information erasure becomes increasingly crucial as computing devices shrink: minimising heat-induced errors demands optimal pure-state preparation. For this, however, Nernst's third law posits an infinite-resource requirement: either energy, time, or control complexity must diverge. Here, we address the practical challenge of efficiently cooling quantum systems using finite resources. We investigate the ensuing resource trade-offs and present efficient protocols for finite distinct energy gaps in settings pertaining to coherent or incoherent control, corresponding to quantum batteries and heat engines, respectively. Expressing energy bounds through thermodynamic length, our findings illuminate the optimal distribution of energy gaps, detailing the resource limitations of preparing pure states in practical settings.\",\"urldate\":\"2024-06-04\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Taranto\"],\"firstnames\":[\"Philip\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Lipka-Bartosik\"],\"firstnames\":[\"Patryk\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Rodríguez-Briones\"],\"firstnames\":[\"Nayeli\",\"A.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Perarnau-Llobet\"],\"firstnames\":[\"Martí\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Friis\"],\"firstnames\":[\"Nicolai\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Huber\"],\"firstnames\":[\"Marcus\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Bakhshinezhad\"],\"firstnames\":[\"Pharnam\"],\"suffixes\":[]}],\"month\":\"April\",\"year\":\"2024\",\"note\":\"arXiv:2404.06649 [quant-ph]\",\"keywords\":\"Quantum Physics\",\"bibtex\":\"@misc{taranto_efficiently_2024,\\n\\ttitle = {Efficiently {Cooling} {Quantum} {Systems} with {Finite} {Resources}: {Insights} from {Thermodynamic} {Geometry}},\\n\\tshorttitle = {Efficiently {Cooling} {Quantum} {Systems} with {Finite} {Resources}},\\n\\turl = {http://arxiv.org/abs/2404.06649},\\n\\tdoi = {10.48550/arXiv.2404.06649},\\n\\tabstract = {Landauer's universal limit on heat dissipation during information erasure becomes increasingly crucial as computing devices shrink: minimising heat-induced errors demands optimal pure-state preparation. For this, however, Nernst's third law posits an infinite-resource requirement: either energy, time, or control complexity must diverge. Here, we address the practical challenge of efficiently cooling quantum systems using finite resources. We investigate the ensuing resource trade-offs and present efficient protocols for finite distinct energy gaps in settings pertaining to coherent or incoherent control, corresponding to quantum batteries and heat engines, respectively. Expressing energy bounds through thermodynamic length, our findings illuminate the optimal distribution of energy gaps, detailing the resource limitations of preparing pure states in practical settings.},\\n\\turldate = {2024-06-04},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Taranto, Philip and Lipka-Bartosik, Patryk and Rodríguez-Briones, Nayeli A. and Perarnau-Llobet, Martí and Friis, Nicolai and Huber, Marcus and Bakhshinezhad, Pharnam},\\n\\tmonth = apr,\\n\\tyear = {2024},\\n\\tnote = {arXiv:2404.06649 [quant-ph]},\\n\\tkeywords = {Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Taranto, P.\",\"Lipka-Bartosik, P.\",\"Rodríguez-Briones, N. A.\",\"Perarnau-Llobet, M.\",\"Friis, N.\",\"Huber, M.\",\"Bakhshinezhad, P.\"],\"key\":\"taranto_efficiently_2024\",\"id\":\"taranto_efficiently_2024\",\"bibbaseid\":\"taranto-lipkabartosik-rodrguezbriones-perarnaullobet-friis-huber-bakhshinezhad-efficientlycoolingquantumsystemswithfiniteresourcesinsightsfromthermodynamicgeometry-2024\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2404.06649\"},\"keyword\":[\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Entropy production in the mesoscopic-leads formulation of quantum thermodynamics\",\"url\":\"http://arxiv.org/abs/2312.12513\",\"doi\":\"10.48550/arXiv.2312.12513\",\"abstract\":\"Understanding the entropy production of systems strongly coupled to thermal baths is a core problem of both quantum thermodynamics and mesoscopic physics. While there exist many techniques to accurately study entropy production in such systems, they typically require a microscopic description of the baths, which can become numerically intractable to study for large systems. Alternatively an open-systems approach can be employed with all the nuances associated with various levels of approximation. Recently, the mesoscopic leads approach has emerged as a powerful method for studying such quantum systems strongly coupled to multiple thermal baths. In this method, a set of discretised lead modes, each locally damped, provide a Markovian embedding. Here we show that this method proves extremely useful to describe entropy production of a strongly coupled open quantum system. We show numerically, for both non-interacting and interacting setups, that a system coupled to a single bath exhibits a thermal fixed point at the level of the embedding. This allows us to use various results from the thermodynamics of quantum dynamical semi-groups to infer the non-equilibrium thermodynamics of the strongly coupled, non-Markovian central systems. In particular, we show that the entropy production in the transient regime recovers the well established microscopic definitions of entropy production with a correction that can be computed explicitly for both the single- and multiple-lead cases.\",\"urldate\":\"2024-06-04\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Lacerda\"],\"firstnames\":[\"Artur\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Kewming\"],\"firstnames\":[\"Michael\",\"J.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Brenes\"],\"firstnames\":[\"Marlon\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Jackson\"],\"firstnames\":[\"Conor\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Clark\"],\"firstnames\":[\"Stephen\",\"R.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Mitchison\"],\"firstnames\":[\"Mark\",\"T.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Goold\"],\"firstnames\":[\"John\"],\"suffixes\":[]}],\"month\":\"December\",\"year\":\"2023\",\"note\":\"arXiv:2312.12513 [cond-mat, physics:quant-ph]\",\"keywords\":\"Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Statistical Mechanics, Quantum Physics\",\"bibtex\":\"@misc{lacerda_entropy_2023,\\n\\ttitle = {Entropy production in the mesoscopic-leads formulation of quantum thermodynamics},\\n\\turl = {http://arxiv.org/abs/2312.12513},\\n\\tdoi = {10.48550/arXiv.2312.12513},\\n\\tabstract = {Understanding the entropy production of systems strongly coupled to thermal baths is a core problem of both quantum thermodynamics and mesoscopic physics. While there exist many techniques to accurately study entropy production in such systems, they typically require a microscopic description of the baths, which can become numerically intractable to study for large systems. Alternatively an open-systems approach can be employed with all the nuances associated with various levels of approximation. Recently, the mesoscopic leads approach has emerged as a powerful method for studying such quantum systems strongly coupled to multiple thermal baths. In this method, a set of discretised lead modes, each locally damped, provide a Markovian embedding. Here we show that this method proves extremely useful to describe entropy production of a strongly coupled open quantum system. We show numerically, for both non-interacting and interacting setups, that a system coupled to a single bath exhibits a thermal fixed point at the level of the embedding. This allows us to use various results from the thermodynamics of quantum dynamical semi-groups to infer the non-equilibrium thermodynamics of the strongly coupled, non-Markovian central systems. In particular, we show that the entropy production in the transient regime recovers the well established microscopic definitions of entropy production with a correction that can be computed explicitly for both the single- and multiple-lead cases.},\\n\\turldate = {2024-06-04},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Lacerda, Artur and Kewming, Michael J. and Brenes, Marlon and Jackson, Conor and Clark, Stephen R. and Mitchison, Mark T. and Goold, John},\\n\\tmonth = dec,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2312.12513 [cond-mat, physics:quant-ph]},\\n\\tkeywords = {Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Statistical Mechanics, Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Lacerda, A.\",\"Kewming, M. J.\",\"Brenes, M.\",\"Jackson, C.\",\"Clark, S. R.\",\"Mitchison, M. T.\",\"Goold, J.\"],\"key\":\"lacerda_entropy_2023\",\"id\":\"lacerda_entropy_2023\",\"bibbaseid\":\"lacerda-kewming-brenes-jackson-clark-mitchison-goold-entropyproductioninthemesoscopicleadsformulationofquantumthermodynamics-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2312.12513\"},\"keyword\":[\"Condensed Matter - Mesoscale and Nanoscale Physics\",\"Condensed Matter - Statistical Mechanics\",\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Entanglement signature in quantum work statistics in the slow-driving regime\",\"url\":\"http://arxiv.org/abs/2405.17121\",\"doi\":\"10.48550/arXiv.2405.17121\",\"abstract\":\"In slowly driven classical systems, work is a stochastic quantity and its probability distribution is known to satisfy the work fluctuation-dissipation relation, which states that the mean and variance of the dissipated work are linearly related. Recently, it was shown that generation of quantum coherence in the instantaneous energy eigenbasis leads to a correction to this linear relation in the slow-driving regime. Here, we go even further by investigating nonclassical features of work fluctuations in setups with more than one system. To do this, we first generalize slow control protocols to encompass multipartite systems, allowing for the generation of quantum correlations during the driving process. Then, focussing on two-qubit systems, we show that entanglement generation leads to a positive contribution to the dissipated work, which is distinct from the quantum correction due to local coherence generation known from previous work. Our results show that entanglement generated during slow control protocols, e.g. as an unavoidable consequence of qubit crosstalk, comes at the cost of increased dissipation.\",\"urldate\":\"2024-06-04\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Li\"],\"firstnames\":[\"Jian\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Mitchison\"],\"firstnames\":[\"Mark\",\"T.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Moreira\"],\"firstnames\":[\"Saulo\",\"V.\"],\"suffixes\":[]}],\"month\":\"May\",\"year\":\"2024\",\"note\":\"arXiv:2405.17121 [cond-mat, physics:quant-ph]\",\"keywords\":\"Condensed Matter - Statistical Mechanics, Quantum Physics\",\"bibtex\":\"@misc{li_entanglement_2024,\\n\\ttitle = {Entanglement signature in quantum work statistics in the slow-driving regime},\\n\\turl = {http://arxiv.org/abs/2405.17121},\\n\\tdoi = {10.48550/arXiv.2405.17121},\\n\\tabstract = {In slowly driven classical systems, work is a stochastic quantity and its probability distribution is known to satisfy the work fluctuation-dissipation relation, which states that the mean and variance of the dissipated work are linearly related. Recently, it was shown that generation of quantum coherence in the instantaneous energy eigenbasis leads to a correction to this linear relation in the slow-driving regime. Here, we go even further by investigating nonclassical features of work fluctuations in setups with more than one system. To do this, we first generalize slow control protocols to encompass multipartite systems, allowing for the generation of quantum correlations during the driving process. Then, focussing on two-qubit systems, we show that entanglement generation leads to a positive contribution to the dissipated work, which is distinct from the quantum correction due to local coherence generation known from previous work. Our results show that entanglement generated during slow control protocols, e.g. as an unavoidable consequence of qubit crosstalk, comes at the cost of increased dissipation.},\\n\\turldate = {2024-06-04},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Li, Jian and Mitchison, Mark T. and Moreira, Saulo V.},\\n\\tmonth = may,\\n\\tyear = {2024},\\n\\tnote = {arXiv:2405.17121 [cond-mat, physics:quant-ph]},\\n\\tkeywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Li, J.\",\"Mitchison, M. T.\",\"Moreira, S. V.\"],\"key\":\"li_entanglement_2024\",\"id\":\"li_entanglement_2024\",\"bibbaseid\":\"li-mitchison-moreira-entanglementsignatureinquantumworkstatisticsintheslowdrivingregime-2024\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2405.17121\"},\"keyword\":[\"Condensed Matter - Statistical Mechanics\",\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Distribution of Fidelity in Quantum State Transfer Protocols\",\"url\":\"http://arxiv.org/abs/2405.02721\",\"doi\":\"10.48550/arXiv.2405.02721\",\"abstract\":\"Quantum state transfer protocols are a major toolkit in many quantum information processing tasks, from quantum key distribution to quantum computation. To assess performance of a such a protocol, one often relies on the average fidelity between the input and the output states. Going beyond this scheme, we analyze the entire probability distribution of fidelity, providing a general framework to derive it for the transfer of single- and two-qubit states. Starting from the delta-like shape of the fidelity distribution, characteristic to perfect transfer, we analyze its broadening and deformation due to realistic features of the process, including non-perfect read-out timing. Different models of quantum transfer, sharing the same value of the average fidelity, display different distributions of fidelity, providing thus additional information on the protocol, including the minimum fidelity.\",\"urldate\":\"2024-06-04\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Lorenzo\"],\"firstnames\":[\"Salvatore\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Plastina\"],\"firstnames\":[\"Francesco\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Apollaro\"],\"firstnames\":[\"Tony\",\"J.\",\"G.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Consiglio\"],\"firstnames\":[\"Mirko\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Życzkowski\"],\"firstnames\":[\"Karol\"],\"suffixes\":[]}],\"month\":\"May\",\"year\":\"2024\",\"note\":\"arXiv:2405.02721 [quant-ph]\",\"keywords\":\"Quantum Physics\",\"bibtex\":\"@misc{lorenzo_distribution_2024,\\n\\ttitle = {Distribution of {Fidelity} in {Quantum} {State} {Transfer} {Protocols}},\\n\\turl = {http://arxiv.org/abs/2405.02721},\\n\\tdoi = {10.48550/arXiv.2405.02721},\\n\\tabstract = {Quantum state transfer protocols are a major toolkit in many quantum information processing tasks, from quantum key distribution to quantum computation. To assess performance of a such a protocol, one often relies on the average fidelity between the input and the output states. Going beyond this scheme, we analyze the entire probability distribution of fidelity, providing a general framework to derive it for the transfer of single- and two-qubit states. Starting from the delta-like shape of the fidelity distribution, characteristic to perfect transfer, we analyze its broadening and deformation due to realistic features of the process, including non-perfect read-out timing. Different models of quantum transfer, sharing the same value of the average fidelity, display different distributions of fidelity, providing thus additional information on the protocol, including the minimum fidelity.},\\n\\turldate = {2024-06-04},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Lorenzo, Salvatore and Plastina, Francesco and Apollaro, Tony J. G. and Consiglio, Mirko and Życzkowski, Karol},\\n\\tmonth = may,\\n\\tyear = {2024},\\n\\tnote = {arXiv:2405.02721 [quant-ph]},\\n\\tkeywords = {Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Lorenzo, S.\",\"Plastina, F.\",\"Apollaro, T. J. G.\",\"Consiglio, M.\",\"Życzkowski, K.\"],\"key\":\"lorenzo_distribution_2024\",\"id\":\"lorenzo_distribution_2024\",\"bibbaseid\":\"lorenzo-plastina-apollaro-consiglio-yczkowski-distributionoffidelityinquantumstatetransferprotocols-2024\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2405.02721\"},\"keyword\":[\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Quantum refrigeration powered by noise in a superconducting circuit\",\"url\":\"http://arxiv.org/abs/2403.03373\",\"abstract\":\"While dephasing noise frequently presents obstacles for quantum devices, it can become an asset in the context of a Brownian-type quantum refrigerator. Here we demonstrate a novel quantum thermal machine that leverages noise-assisted quantum transport to fuel a cooling engine in steady state. The device exploits symmetry-selective couplings between a superconducting artificial molecule and two microwave waveguides. These waveguides act as thermal reservoirs of different temperatures, which we regulate by employing synthesized thermal fields. We inject dephasing noise through a third channel that is longitudinally coupled to an artificial atom of the molecule. By varying the relative temperatures of the reservoirs, and measuring heat currents with a resolution below 1 aW, we demonstrate that the device can be operated as a quantum heat engine, thermal accelerator, and refrigerator. Our findings open new avenues for investigating quantum thermodynamics using superconducting quantum machines coupled to thermal microwave waveguides.\",\"urldate\":\"2024-03-07\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Sundelin\"],\"firstnames\":[\"Simon\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Aamir\"],\"firstnames\":[\"Mohammed\",\"Ali\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Kulkarni\"],\"firstnames\":[\"Vyom\",\"Manish\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Castillo-Moreno\"],\"firstnames\":[\"Claudia\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Gasparinetti\"],\"firstnames\":[\"Simone\"],\"suffixes\":[]}],\"month\":\"March\",\"year\":\"2024\",\"note\":\"arXiv:2403.03373 [quant-ph]\",\"keywords\":\"Quantum Physics\",\"bibtex\":\"@misc{sundelin_quantum_2024,\\n\\ttitle = {Quantum refrigeration powered by noise in a superconducting circuit},\\n\\turl = {http://arxiv.org/abs/2403.03373},\\n\\tabstract = {While dephasing noise frequently presents obstacles for quantum devices, it can become an asset in the context of a Brownian-type quantum refrigerator. Here we demonstrate a novel quantum thermal machine that leverages noise-assisted quantum transport to fuel a cooling engine in steady state. The device exploits symmetry-selective couplings between a superconducting artificial molecule and two microwave waveguides. These waveguides act as thermal reservoirs of different temperatures, which we regulate by employing synthesized thermal fields. We inject dephasing noise through a third channel that is longitudinally coupled to an artificial atom of the molecule. By varying the relative temperatures of the reservoirs, and measuring heat currents with a resolution below 1 aW, we demonstrate that the device can be operated as a quantum heat engine, thermal accelerator, and refrigerator. Our findings open new avenues for investigating quantum thermodynamics using superconducting quantum machines coupled to thermal microwave waveguides.},\\n\\turldate = {2024-03-07},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Sundelin, Simon and Aamir, Mohammed Ali and Kulkarni, Vyom Manish and Castillo-Moreno, Claudia and Gasparinetti, Simone},\\n\\tmonth = mar,\\n\\tyear = {2024},\\n\\tnote = {arXiv:2403.03373 [quant-ph]},\\n\\tkeywords = {Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Sundelin, S.\",\"Aamir, M. A.\",\"Kulkarni, V. M.\",\"Castillo-Moreno, C.\",\"Gasparinetti, S.\"],\"key\":\"sundelin_quantum_2024\",\"id\":\"sundelin_quantum_2024\",\"bibbaseid\":\"sundelin-aamir-kulkarni-castillomoreno-gasparinetti-quantumrefrigerationpoweredbynoiseinasuperconductingcircuit-2024\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2403.03373\"},\"keyword\":[\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"downloads\":1,\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Autonomous Quantum Processing Unit: What does it take to construct a self-contained model for quantum computation?\",\"shorttitle\":\"Autonomous Quantum Processing Unit\",\"url\":\"http://arxiv.org/abs/2402.00111\",\"doi\":\"10.48550/arXiv.2402.00111\",\"abstract\":\"Computation is an input-output process, where a program encoding a problem to be solved is inserted into a machine that outputs a solution. Whilst a formalism for quantum Turing machines which lifts this input-output feature into the quantum domain has been developed, this is not how quantum computation is physically conceived. Usually, such a quantum computation is enacted by the manipulation of macroscopic control interactions according to a program executed by a classical system. To understand the fundamental limits of computation, especially in relation to the resources required, it is pivotal to work with a fully self-contained description of a quantum computation where computational and thermodynamic resources are not be obscured by the classical control. To this end, we answer the question; \\\"Can we build a physical model for quantum computation that is fully autonomous?\\\", i.e., where the program to be executed as well as the control are both quantum. We do so by developing a framework that we dub the autonomous Quantum Processing Unit (aQPU). This machine, consisting of a timekeeping mechanism, instruction register and computational system allows an agent to input their problem and receive the solution as an output, autonomously. Using the theory of open quantum systems and results from the field of quantum clocks we are able to use the aQPU as a formalism to investigate relationships between the thermodynamics, complexity, speed and fidelity of a desired quantum computation.\",\"urldate\":\"2024-02-09\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Meier\"],\"firstnames\":[\"Florian\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Huber\"],\"firstnames\":[\"Marcus\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Erker\"],\"firstnames\":[\"Paul\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Xuereb\"],\"firstnames\":[\"Jake\"],\"suffixes\":[]}],\"month\":\"January\",\"year\":\"2024\",\"note\":\"arXiv:2402.00111 [quant-ph]\",\"keywords\":\"Quantum Physics\",\"bibtex\":\"@misc{meier_autonomous_2024,\\n\\ttitle = {Autonomous {Quantum} {Processing} {Unit}: {What} does it take to construct a self-contained model for quantum computation?},\\n\\tshorttitle = {Autonomous {Quantum} {Processing} {Unit}},\\n\\turl = {http://arxiv.org/abs/2402.00111},\\n\\tdoi = {10.48550/arXiv.2402.00111},\\n\\tabstract = {Computation is an input-output process, where a program encoding a problem to be solved is inserted into a machine that outputs a solution. Whilst a formalism for quantum Turing machines which lifts this input-output feature into the quantum domain has been developed, this is not how quantum computation is physically conceived. Usually, such a quantum computation is enacted by the manipulation of macroscopic control interactions according to a program executed by a classical system. To understand the fundamental limits of computation, especially in relation to the resources required, it is pivotal to work with a fully self-contained description of a quantum computation where computational and thermodynamic resources are not be obscured by the classical control. To this end, we answer the question; \\\"Can we build a physical model for quantum computation that is fully autonomous?\\\", i.e., where the program to be executed as well as the control are both quantum. We do so by developing a framework that we dub the autonomous Quantum Processing Unit (aQPU). This machine, consisting of a timekeeping mechanism, instruction register and computational system allows an agent to input their problem and receive the solution as an output, autonomously. Using the theory of open quantum systems and results from the field of quantum clocks we are able to use the aQPU as a formalism to investigate relationships between the thermodynamics, complexity, speed and fidelity of a desired quantum computation.},\\n\\turldate = {2024-02-09},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Meier, Florian and Huber, Marcus and Erker, Paul and Xuereb, Jake},\\n\\tmonth = jan,\\n\\tyear = {2024},\\n\\tnote = {arXiv:2402.00111 [quant-ph]},\\n\\tkeywords = {Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Meier, F.\",\"Huber, M.\",\"Erker, P.\",\"Xuereb, J.\"],\"key\":\"meier_autonomous_2024\",\"id\":\"meier_autonomous_2024\",\"bibbaseid\":\"meier-huber-erker-xuereb-autonomousquantumprocessingunitwhatdoesittaketoconstructaselfcontainedmodelforquantumcomputation-2024\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2402.00111\"},\"keyword\":[\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"article\",\"type\":\"article\",\"title\":\"Stochastic thermodynamics of a quantum dot coupled to a finite-size reservoir\",\"volume\":\"131\",\"issn\":\"0031-9007, 1079-7114\",\"url\":\"http://arxiv.org/abs/2307.06679\",\"doi\":\"10.1103/PhysRevLett.131.220405\",\"abstract\":\"In nano-scale systems coupled to finite-size reservoirs, the reservoir temperature may fluctuate due to heat exchange between the system and the reservoirs. To date, a stochastic thermodynamic analysis of heat, work and entropy production in such systems is however missing. Here we fill this gap by analyzing a single-level quantum dot tunnel coupled to a finite-size electronic reservoir. The system dynamics is described by a Markovian master equation, depending on the fluctuating temperature of the reservoir. Based on a fluctuation theorem, we identify the appropriate entropy production that results in a thermodynamically consistent statistical description. We illustrate our results by analyzing the work production for a finite-size reservoir Szilard engine.\",\"number\":\"22\",\"urldate\":\"2024-01-17\",\"journal\":\"Physical Review Letters\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Moreira\"],\"firstnames\":[\"Saulo\",\"V.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Samuelsson\"],\"firstnames\":[\"Peter\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Potts\"],\"firstnames\":[\"Patrick\",\"P.\"],\"suffixes\":[]}],\"month\":\"December\",\"year\":\"2023\",\"note\":\"arXiv:2307.06679 [cond-mat, physics:quant-ph]\",\"keywords\":\"Condensed Matter - Statistical Mechanics, Quantum Physics\",\"pages\":\"220405\",\"bibtex\":\"@article{moreira_stochastic_2023,\\n\\ttitle = {Stochastic thermodynamics of a quantum dot coupled to a finite-size reservoir},\\n\\tvolume = {131},\\n\\tissn = {0031-9007, 1079-7114},\\n\\turl = {http://arxiv.org/abs/2307.06679},\\n\\tdoi = {10.1103/PhysRevLett.131.220405},\\n\\tabstract = {In nano-scale systems coupled to finite-size reservoirs, the reservoir temperature may fluctuate due to heat exchange between the system and the reservoirs. To date, a stochastic thermodynamic analysis of heat, work and entropy production in such systems is however missing. Here we fill this gap by analyzing a single-level quantum dot tunnel coupled to a finite-size electronic reservoir. The system dynamics is described by a Markovian master equation, depending on the fluctuating temperature of the reservoir. Based on a fluctuation theorem, we identify the appropriate entropy production that results in a thermodynamically consistent statistical description. We illustrate our results by analyzing the work production for a finite-size reservoir Szilard engine.},\\n\\tnumber = {22},\\n\\turldate = {2024-01-17},\\n\\tjournal = {Physical Review Letters},\\n\\tauthor = {Moreira, Saulo V. and Samuelsson, Peter and Potts, Patrick P.},\\n\\tmonth = dec,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2307.06679 [cond-mat, physics:quant-ph]},\\n\\tkeywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},\\n\\tpages = {220405},\\n}\\n\\n\",\"author_short\":[\"Moreira, S. V.\",\"Samuelsson, P.\",\"Potts, P. P.\"],\"key\":\"moreira_stochastic_2023\",\"id\":\"moreira_stochastic_2023\",\"bibbaseid\":\"moreira-samuelsson-potts-stochasticthermodynamicsofaquantumdotcoupledtoafinitesizereservoir-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2307.06679\"},\"keyword\":[\"Condensed Matter - Statistical Mechanics\",\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"DiVincenzo-like criteria for autonomous quantum machines\",\"url\":\"http://arxiv.org/abs/2307.08739\",\"doi\":\"10.48550/arXiv.2307.08739\",\"abstract\":\"Controlled quantum machines have matured significantly. A natural next step is to grant them autonomy, freeing them from timed external control. For example, autonomy could unfetter quantum computers from classical control wires that heat and decohere them; and an autonomous quantum refrigerator recently reset superconducting qubits to near their ground states, as is necessary before a computation. What conditions are necessary for realizing useful autonomous quantum machines? Inspired by recent quantum thermodynamics and chemistry, we posit conditions analogous to DiVincenzo's criteria for quantum computing. Our criteria are intended to foment and guide the development of useful autonomous quantum machines.\",\"urldate\":\"2024-01-17\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Guzmán\"],\"firstnames\":[\"José\",\"Antonio\",\"Marín\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Erker\"],\"firstnames\":[\"Paul\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Gasparinetti\"],\"firstnames\":[\"Simone\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Huber\"],\"firstnames\":[\"Marcus\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Halpern\"],\"firstnames\":[\"Nicole\",\"Yunger\"],\"suffixes\":[]}],\"month\":\"July\",\"year\":\"2023\",\"note\":\"arXiv:2307.08739 [cond-mat, physics:physics, physics:quant-ph]\",\"keywords\":\"Condensed Matter - Statistical Mechanics, Physics - Biological Physics, Physics - Chemical Physics, Quantum Physics\",\"bibtex\":\"@misc{guzman_divincenzo-like_2023,\\n\\ttitle = {{DiVincenzo}-like criteria for autonomous quantum machines},\\n\\turl = {http://arxiv.org/abs/2307.08739},\\n\\tdoi = {10.48550/arXiv.2307.08739},\\n\\tabstract = {Controlled quantum machines have matured significantly. A natural next step is to grant them autonomy, freeing them from timed external control. For example, autonomy could unfetter quantum computers from classical control wires that heat and decohere them; and an autonomous quantum refrigerator recently reset superconducting qubits to near their ground states, as is necessary before a computation. What conditions are necessary for realizing useful autonomous quantum machines? Inspired by recent quantum thermodynamics and chemistry, we posit conditions analogous to DiVincenzo's criteria for quantum computing. Our criteria are intended to foment and guide the development of useful autonomous quantum machines.},\\n\\turldate = {2024-01-17},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Guzmán, José Antonio Marín and Erker, Paul and Gasparinetti, Simone and Huber, Marcus and Halpern, Nicole Yunger},\\n\\tmonth = jul,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2307.08739 [cond-mat, physics:physics, physics:quant-ph]},\\n\\tkeywords = {Condensed Matter - Statistical Mechanics, Physics - Biological Physics, Physics - Chemical Physics, Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Guzmán, J. A. M.\",\"Erker, P.\",\"Gasparinetti, S.\",\"Huber, M.\",\"Halpern, N. Y.\"],\"key\":\"guzman_divincenzo-like_2023\",\"id\":\"guzman_divincenzo-like_2023\",\"bibbaseid\":\"guzmn-erker-gasparinetti-huber-halpern-divincenzolikecriteriaforautonomousquantummachines-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2307.08739\"},\"keyword\":[\"Condensed Matter - Statistical Mechanics\",\"Physics - Biological Physics\",\"Physics - Chemical Physics\",\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"article\",\"type\":\"article\",\"title\":\"The Impact of Imperfect Timekeeping on Quantum Control\",\"volume\":\"131\",\"issn\":\"0031-9007, 1079-7114\",\"url\":\"http://arxiv.org/abs/2301.10767\",\"doi\":\"10.1103/PhysRevLett.131.160204\",\"abstract\":\"In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter which no physical clock can ever perfectly characterise. In this letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.\",\"number\":\"16\",\"urldate\":\"2024-01-17\",\"journal\":\"Physical Review Letters\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Xuereb\"],\"firstnames\":[\"Jake\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Meier\"],\"firstnames\":[\"Florian\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Erker\"],\"firstnames\":[\"Paul\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Mitchison\"],\"firstnames\":[\"Mark\",\"T.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Huber\"],\"firstnames\":[\"Marcus\"],\"suffixes\":[]}],\"month\":\"October\",\"year\":\"2023\",\"note\":\"arXiv:2301.10767 [quant-ph]\",\"keywords\":\"Quantum Physics\",\"pages\":\"160204\",\"bibtex\":\"@article{xuereb_impact_2023,\\n\\ttitle = {The {Impact} of {Imperfect} {Timekeeping} on {Quantum} {Control}},\\n\\tvolume = {131},\\n\\tissn = {0031-9007, 1079-7114},\\n\\turl = {http://arxiv.org/abs/2301.10767},\\n\\tdoi = {10.1103/PhysRevLett.131.160204},\\n\\tabstract = {In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter which no physical clock can ever perfectly characterise. In this letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.},\\n\\tnumber = {16},\\n\\turldate = {2024-01-17},\\n\\tjournal = {Physical Review Letters},\\n\\tauthor = {Xuereb, Jake and Meier, Florian and Erker, Paul and Mitchison, Mark T. and Huber, Marcus},\\n\\tmonth = oct,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2301.10767 [quant-ph]},\\n\\tkeywords = {Quantum Physics},\\n\\tpages = {160204},\\n}\\n\\n\",\"author_short\":[\"Xuereb, J.\",\"Meier, F.\",\"Erker, P.\",\"Mitchison, M. T.\",\"Huber, M.\"],\"key\":\"xuereb_impact_2023\",\"id\":\"xuereb_impact_2023\",\"bibbaseid\":\"xuereb-meier-erker-mitchison-huber-theimpactofimperfecttimekeepingonquantumcontrol-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2301.10767\"},\"keyword\":[\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"downloads\":1,\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Powering an autonomous clock with quantum electromechanics\",\"url\":\"http://arxiv.org/abs/2307.09122\",\"doi\":\"10.48550/arXiv.2307.09122\",\"abstract\":\"We theoretically analyse an autonomous clock comprising a nanoelectromechanical system, which undergoes self-oscillations driven by electron tunnelling. The periodic mechanical motion behaves as the clockwork, similar to the swinging of a pendulum, while induced oscillations in the electrical current can be used to read out the ticks. We simulate the dynamics of the system in the quasi-adiabatic limit of slow mechanical motion, allowing us to infer statistical properties of the clock's ticks from the current auto-correlation function. The distribution of individual ticks exhibits a tradeoff between accuracy, resolution, and dissipation, as expected from previous literature. Going beyond the distribution of individual ticks, we investigate how clock accuracy varies over different integration times by computing the Allan variance. We observe non-monotonic features in the Allan variance as a function of time and applied voltage, which can be explained by the presence of temporal correlations between ticks. These correlations are shown to yield a precision advantage for timekeeping over the timescales that the correlations persist. Our results illustrate the non-trivial features of the tick series produced by nanoscale clocks, and pave the way for experimental investigation of clock thermodynamics using nanoelectromechanical systems.\",\"urldate\":\"2024-01-17\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Culhane\"],\"firstnames\":[\"Oisin\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Kewming\"],\"firstnames\":[\"Michael\",\"J.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Silva\"],\"firstnames\":[\"Alessandro\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Goold\"],\"firstnames\":[\"John\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Mitchison\"],\"firstnames\":[\"Mark\",\"T.\"],\"suffixes\":[]}],\"month\":\"July\",\"year\":\"2023\",\"note\":\"arXiv:2307.09122 [quant-ph]\",\"keywords\":\"Quantum Physics\",\"bibtex\":\"@misc{culhane_powering_2023,\\n\\ttitle = {Powering an autonomous clock with quantum electromechanics},\\n\\turl = {http://arxiv.org/abs/2307.09122},\\n\\tdoi = {10.48550/arXiv.2307.09122},\\n\\tabstract = {We theoretically analyse an autonomous clock comprising a nanoelectromechanical system, which undergoes self-oscillations driven by electron tunnelling. The periodic mechanical motion behaves as the clockwork, similar to the swinging of a pendulum, while induced oscillations in the electrical current can be used to read out the ticks. We simulate the dynamics of the system in the quasi-adiabatic limit of slow mechanical motion, allowing us to infer statistical properties of the clock's ticks from the current auto-correlation function. The distribution of individual ticks exhibits a tradeoff between accuracy, resolution, and dissipation, as expected from previous literature. Going beyond the distribution of individual ticks, we investigate how clock accuracy varies over different integration times by computing the Allan variance. We observe non-monotonic features in the Allan variance as a function of time and applied voltage, which can be explained by the presence of temporal correlations between ticks. These correlations are shown to yield a precision advantage for timekeeping over the timescales that the correlations persist. Our results illustrate the non-trivial features of the tick series produced by nanoscale clocks, and pave the way for experimental investigation of clock thermodynamics using nanoelectromechanical systems.},\\n\\turldate = {2024-01-17},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Culhane, Oisin and Kewming, Michael J. and Silva, Alessandro and Goold, John and Mitchison, Mark T.},\\n\\tmonth = jul,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2307.09122 [quant-ph]},\\n\\tkeywords = {Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Culhane, O.\",\"Kewming, M. J.\",\"Silva, A.\",\"Goold, J.\",\"Mitchison, M. T.\"],\"key\":\"culhane_powering_2023\",\"id\":\"culhane_powering_2023\",\"bibbaseid\":\"culhane-kewming-silva-goold-mitchison-poweringanautonomousclockwithquantumelectromechanics-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2307.09122\"},\"keyword\":[\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"article\",\"type\":\"article\",\"title\":\"Impact of Imperfect Timekeeping on Quantum Control\",\"volume\":\"131\",\"url\":\"https://link.aps.org/doi/10.1103/PhysRevLett.131.160204\",\"doi\":\"10.1103/PhysRevLett.131.160204\",\"abstract\":\"In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter that no physical clock can ever perfectly characterize. In this Letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.\",\"number\":\"16\",\"urldate\":\"2024-01-17\",\"journal\":\"Physical Review Letters\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Xuereb\"],\"firstnames\":[\"Jake\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Erker\"],\"firstnames\":[\"Paul\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Meier\"],\"firstnames\":[\"Florian\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Mitchison\"],\"firstnames\":[\"Mark\",\"T.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Huber\"],\"firstnames\":[\"Marcus\"],\"suffixes\":[]}],\"month\":\"October\",\"year\":\"2023\",\"note\":\"Publisher: American Physical Society\",\"pages\":\"160204\",\"bibtex\":\"@article{xuereb_impact_2023-1,\\n\\ttitle = {Impact of {Imperfect} {Timekeeping} on {Quantum} {Control}},\\n\\tvolume = {131},\\n\\turl = {https://link.aps.org/doi/10.1103/PhysRevLett.131.160204},\\n\\tdoi = {10.1103/PhysRevLett.131.160204},\\n\\tabstract = {In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter that no physical clock can ever perfectly characterize. In this Letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.},\\n\\tnumber = {16},\\n\\turldate = {2024-01-17},\\n\\tjournal = {Physical Review Letters},\\n\\tauthor = {Xuereb, Jake and Erker, Paul and Meier, Florian and Mitchison, Mark T. and Huber, Marcus},\\n\\tmonth = oct,\\n\\tyear = {2023},\\n\\tnote = {Publisher: American Physical Society},\\n\\tpages = {160204},\\n}\\n\\n\",\"author_short\":[\"Xuereb, J.\",\"Erker, P.\",\"Meier, F.\",\"Mitchison, M. T.\",\"Huber, M.\"],\"key\":\"xuereb_impact_2023-1\",\"id\":\"xuereb_impact_2023-1\",\"bibbaseid\":\"xuereb-erker-meier-mitchison-huber-impactofimperfecttimekeepingonquantumcontrol-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"https://link.aps.org/doi/10.1103/PhysRevLett.131.160204\"},\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Current fluctuations in open quantum systems: Bridging the gap between quantum continuous measurements and full counting statistics\",\"shorttitle\":\"Current fluctuations in open quantum systems\",\"url\":\"http://arxiv.org/abs/2303.04270\",\"doi\":\"10.48550/arXiv.2303.04270\",\"abstract\":\"Continuously measured quantum systems are characterized by an output current, in the form of a stochastic and correlated time series which conveys crucial information about the underlying quantum system. The many tools used to describe current fluctuations are scattered across different communities: quantum opticians often use stochastic master equations, while a prevalent approach in condensed matter physics is provided by full counting statistics. These, however, are simply different sides of the same coin. Our goal with this tutorial is to provide a unified toolbox for describing current fluctuations. This not only provides novel insights, by bringing together different fields in physics, but also yields various analytical and numerical tools for computing quantities of interest. We illustrate our results with various pedagogical examples, and connect them with topical fields of research, such as waiting-time statistics, quantum metrology, thermodynamic uncertainty relations, quantum point contacts and Maxwell's demons.\",\"urldate\":\"2024-01-17\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Landi\"],\"firstnames\":[\"Gabriel\",\"T.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Kewming\"],\"firstnames\":[\"Michael\",\"J.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Mitchison\"],\"firstnames\":[\"Mark\",\"T.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Potts\"],\"firstnames\":[\"Patrick\",\"P.\"],\"suffixes\":[]}],\"month\":\"April\",\"year\":\"2023\",\"note\":\"arXiv:2303.04270 [cond-mat, physics:quant-ph]\",\"keywords\":\"Condensed Matter - Statistical Mechanics, Quantum Physics\",\"bibtex\":\"@misc{landi_current_2023,\\n\\ttitle = {Current fluctuations in open quantum systems: {Bridging} the gap between quantum continuous measurements and full counting statistics},\\n\\tshorttitle = {Current fluctuations in open quantum systems},\\n\\turl = {http://arxiv.org/abs/2303.04270},\\n\\tdoi = {10.48550/arXiv.2303.04270},\\n\\tabstract = {Continuously measured quantum systems are characterized by an output current, in the form of a stochastic and correlated time series which conveys crucial information about the underlying quantum system. The many tools used to describe current fluctuations are scattered across different communities: quantum opticians often use stochastic master equations, while a prevalent approach in condensed matter physics is provided by full counting statistics. These, however, are simply different sides of the same coin. Our goal with this tutorial is to provide a unified toolbox for describing current fluctuations. This not only provides novel insights, by bringing together different fields in physics, but also yields various analytical and numerical tools for computing quantities of interest. We illustrate our results with various pedagogical examples, and connect them with topical fields of research, such as waiting-time statistics, quantum metrology, thermodynamic uncertainty relations, quantum point contacts and Maxwell's demons.},\\n\\turldate = {2024-01-17},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Landi, Gabriel T. and Kewming, Michael J. and Mitchison, Mark T. and Potts, Patrick P.},\\n\\tmonth = apr,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2303.04270 [cond-mat, physics:quant-ph]},\\n\\tkeywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Landi, G. T.\",\"Kewming, M. J.\",\"Mitchison, M. T.\",\"Potts, P. P.\"],\"key\":\"landi_current_2023\",\"id\":\"landi_current_2023\",\"bibbaseid\":\"landi-kewming-mitchison-potts-currentfluctuationsinopenquantumsystemsbridgingthegapbetweenquantumcontinuousmeasurementsandfullcountingstatistics-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2303.04270\"},\"keyword\":[\"Condensed Matter - Statistical Mechanics\",\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"article\",\"type\":\"article\",\"title\":\"Fundamental accuracy-resolution trade-off for timekeeping devices\",\"volume\":\"131\",\"issn\":\"0031-9007, 1079-7114\",\"url\":\"http://arxiv.org/abs/2301.05173\",\"doi\":\"10.1103/PhysRevLett.131.220201\",\"abstract\":\"From a thermodynamic point of view, all clocks are driven by irreversible processes. Additionally, one can use oscillatory systems to temporally modulate the thermodynamic flux towards equilibrium. Focusing on the most elementary thermalization events, this modulation can be thought of as a temporal probability concentration for these events. There are two fundamental factors limiting the performance of clocks: On the one level, the inevitable drifts of the oscillatory system, which are addressed by finding stable atomic or nuclear transitions that lead to astounding precision of today's clocks. On the other level, there is the intrinsically stochastic nature of the irreversible events upon which the clock's operation is based. This becomes relevant when seeking to maximize a clock's resolution at high accuracy, which is ultimately limited by the number of such stochastic events per reference time unit. We address this essential trade-off between clock accuracy and resolution, proving a universal bound for all clocks whose elementary thermalization events are memoryless.\",\"number\":\"22\",\"urldate\":\"2024-01-17\",\"journal\":\"Physical Review Letters\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Meier\"],\"firstnames\":[\"Florian\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Schwarzhans\"],\"firstnames\":[\"Emanuel\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Erker\"],\"firstnames\":[\"Paul\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Huber\"],\"firstnames\":[\"Marcus\"],\"suffixes\":[]}],\"month\":\"November\",\"year\":\"2023\",\"note\":\"arXiv:2301.05173 [quant-ph]\",\"keywords\":\"Quantum Physics\",\"pages\":\"220201\",\"bibtex\":\"@article{meier_fundamental_2023,\\n\\ttitle = {Fundamental accuracy-resolution trade-off for timekeeping devices},\\n\\tvolume = {131},\\n\\tissn = {0031-9007, 1079-7114},\\n\\turl = {http://arxiv.org/abs/2301.05173},\\n\\tdoi = {10.1103/PhysRevLett.131.220201},\\n\\tabstract = {From a thermodynamic point of view, all clocks are driven by irreversible processes. Additionally, one can use oscillatory systems to temporally modulate the thermodynamic flux towards equilibrium. Focusing on the most elementary thermalization events, this modulation can be thought of as a temporal probability concentration for these events. There are two fundamental factors limiting the performance of clocks: On the one level, the inevitable drifts of the oscillatory system, which are addressed by finding stable atomic or nuclear transitions that lead to astounding precision of today's clocks. On the other level, there is the intrinsically stochastic nature of the irreversible events upon which the clock's operation is based. This becomes relevant when seeking to maximize a clock's resolution at high accuracy, which is ultimately limited by the number of such stochastic events per reference time unit. We address this essential trade-off between clock accuracy and resolution, proving a universal bound for all clocks whose elementary thermalization events are memoryless.},\\n\\tnumber = {22},\\n\\turldate = {2024-01-17},\\n\\tjournal = {Physical Review Letters},\\n\\tauthor = {Meier, Florian and Schwarzhans, Emanuel and Erker, Paul and Huber, Marcus},\\n\\tmonth = nov,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2301.05173 [quant-ph]},\\n\\tkeywords = {Quantum Physics},\\n\\tpages = {220201},\\n}\\n\\n\",\"author_short\":[\"Meier, F.\",\"Schwarzhans, E.\",\"Erker, P.\",\"Huber, M.\"],\"key\":\"meier_fundamental_2023\",\"id\":\"meier_fundamental_2023\",\"bibbaseid\":\"meier-schwarzhans-erker-huber-fundamentalaccuracyresolutiontradeofffortimekeepingdevices-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2301.05173\"},\"keyword\":[\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Energy-Consumption Advantage of Quantum Computation\",\"url\":\"http://arxiv.org/abs/2305.11212\",\"doi\":\"10.48550/arXiv.2305.11212\",\"abstract\":\"Energy consumption in solving computational problems has been gaining growing attention as a part of the performance measures of computers. Quantum computation is known to offer advantages over classical computation in terms of various computational resources; however, its advantage in energy consumption has been challenging to analyze due to the lack of a theoretical foundation to relate the physical notion of energy and the computer-scientific notion of complexity for quantum computation with finite computational resources. To bridge this gap, we introduce a general framework for studying the energy consumption of quantum and classical computation based on a computational model that has been conventionally used for studying query complexity in computational complexity theory. With this framework, we derive an upper bound for the achievable energy consumption of quantum computation. We also develop techniques for proving a nonzero lower bound of energy consumption of classical computation based on the energy-conservation law and Landauer's principle. With these general bounds, we rigorously prove that quantum computation achieves an exponential energy-consumption advantage over classical computation for solving a specific computational problem, Simon's problem. Furthermore, we clarify how to demonstrate this energy-consumption advantage of quantum computation in an experimental setting. These results provide a fundamental framework and techniques to explore the physical meaning of quantum advantage in the query-complexity setting based on energy consumption, opening an alternative way to study the advantages of quantum computation.\",\"urldate\":\"2024-01-17\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Meier\"],\"firstnames\":[\"Florian\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Yamasaki\"],\"firstnames\":[\"Hayata\"],\"suffixes\":[]}],\"month\":\"September\",\"year\":\"2023\",\"note\":\"arXiv:2305.11212 [quant-ph]\",\"keywords\":\"Quantum Physics\",\"bibtex\":\"@misc{meier_energy-consumption_2023,\\n\\ttitle = {Energy-{Consumption} {Advantage} of {Quantum} {Computation}},\\n\\turl = {http://arxiv.org/abs/2305.11212},\\n\\tdoi = {10.48550/arXiv.2305.11212},\\n\\tabstract = {Energy consumption in solving computational problems has been gaining growing attention as a part of the performance measures of computers. Quantum computation is known to offer advantages over classical computation in terms of various computational resources; however, its advantage in energy consumption has been challenging to analyze due to the lack of a theoretical foundation to relate the physical notion of energy and the computer-scientific notion of complexity for quantum computation with finite computational resources. To bridge this gap, we introduce a general framework for studying the energy consumption of quantum and classical computation based on a computational model that has been conventionally used for studying query complexity in computational complexity theory. With this framework, we derive an upper bound for the achievable energy consumption of quantum computation. We also develop techniques for proving a nonzero lower bound of energy consumption of classical computation based on the energy-conservation law and Landauer's principle. With these general bounds, we rigorously prove that quantum computation achieves an exponential energy-consumption advantage over classical computation for solving a specific computational problem, Simon's problem. Furthermore, we clarify how to demonstrate this energy-consumption advantage of quantum computation in an experimental setting. These results provide a fundamental framework and techniques to explore the physical meaning of quantum advantage in the query-complexity setting based on energy consumption, opening an alternative way to study the advantages of quantum computation.},\\n\\turldate = {2024-01-17},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Meier, Florian and Yamasaki, Hayata},\\n\\tmonth = sep,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2305.11212 [quant-ph]},\\n\\tkeywords = {Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Meier, F.\",\"Yamasaki, H.\"],\"key\":\"meier_energy-consumption_2023\",\"id\":\"meier_energy-consumption_2023\",\"bibbaseid\":\"meier-yamasaki-energyconsumptionadvantageofquantumcomputation-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2305.11212\"},\"keyword\":[\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"misc\",\"type\":\"misc\",\"title\":\"Thermally driven quantum refrigerator autonomously resets superconducting qubit\",\"url\":\"http://arxiv.org/abs/2305.16710\",\"doi\":\"10.48550/arXiv.2305.16710\",\"abstract\":\"The first thermal machines steered the industrial revolution, but their quantum analogs have yet to prove useful. Here, we demonstrate a useful quantum absorption refrigerator formed from superconducting circuits. We use it to reset a transmon qubit to a temperature lower than that achievable with any one available bath. The process is driven by a thermal gradient and is autonomous – requires no external control. The refrigerator exploits an engineered three-body interaction between the target qubit and two auxiliary qudits coupled to thermal environments. The environments consist of microwave waveguides populated with synthesized thermal photons. The target qubit, if initially fully excited, reaches a steady-state excited-level population of $5{\\\\}times10{\\\\textasciicircum}\\\\{-4\\\\} {\\\\}pm 5{\\\\}times10{\\\\textasciicircum}\\\\{-4\\\\}$ (an effective temperature of 23.5~mK) in about 1.6~${\\\\}mu$s. Our results epitomize how quantum thermal machines can be leveraged for quantum information-processing tasks. They also initiate a path toward experimental studies of quantum thermodynamics with superconducting circuits coupled to propagating thermal microwave fields.\",\"urldate\":\"2024-01-05\",\"publisher\":\"arXiv\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Aamir\"],\"firstnames\":[\"Mohammed\",\"Ali\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Suria\"],\"firstnames\":[\"Paul\",\"Jamet\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Guzmán\"],\"firstnames\":[\"José\",\"Antonio\",\"Marín\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Castillo-Moreno\"],\"firstnames\":[\"Claudia\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Epstein\"],\"firstnames\":[\"Jeffrey\",\"M.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Halpern\"],\"firstnames\":[\"Nicole\",\"Yunger\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Gasparinetti\"],\"firstnames\":[\"Simone\"],\"suffixes\":[]}],\"month\":\"May\",\"year\":\"2023\",\"note\":\"arXiv:2305.16710 [cond-mat, physics:quant-ph]\",\"keywords\":\"Condensed Matter - Statistical Mechanics, Quantum Physics\",\"bibtex\":\"@misc{aamir_thermally_2023,\\n\\ttitle = {Thermally driven quantum refrigerator autonomously resets superconducting qubit},\\n\\turl = {http://arxiv.org/abs/2305.16710},\\n\\tdoi = {10.48550/arXiv.2305.16710},\\n\\tabstract = {The first thermal machines steered the industrial revolution, but their quantum analogs have yet to prove useful. Here, we demonstrate a useful quantum absorption refrigerator formed from superconducting circuits. We use it to reset a transmon qubit to a temperature lower than that achievable with any one available bath. The process is driven by a thermal gradient and is autonomous -- requires no external control. The refrigerator exploits an engineered three-body interaction between the target qubit and two auxiliary qudits coupled to thermal environments. The environments consist of microwave waveguides populated with synthesized thermal photons. The target qubit, if initially fully excited, reaches a steady-state excited-level population of \\\\$5{\\\\textbackslash}times10{\\\\textasciicircum}\\\\{-4\\\\} {\\\\textbackslash}pm 5{\\\\textbackslash}times10{\\\\textasciicircum}\\\\{-4\\\\}\\\\$ (an effective temperature of 23.5{\\\\textasciitilde}mK) in about 1.6{\\\\textasciitilde}\\\\${\\\\textbackslash}mu\\\\$s. Our results epitomize how quantum thermal machines can be leveraged for quantum information-processing tasks. They also initiate a path toward experimental studies of quantum thermodynamics with superconducting circuits coupled to propagating thermal microwave fields.},\\n\\turldate = {2024-01-05},\\n\\tpublisher = {arXiv},\\n\\tauthor = {Aamir, Mohammed Ali and Suria, Paul Jamet and Guzmán, José Antonio Marín and Castillo-Moreno, Claudia and Epstein, Jeffrey M. and Halpern, Nicole Yunger and Gasparinetti, Simone},\\n\\tmonth = may,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2305.16710 [cond-mat, physics:quant-ph]},\\n\\tkeywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},\\n}\\n\\n\",\"author_short\":[\"Aamir, M. A.\",\"Suria, P. J.\",\"Guzmán, J. A. M.\",\"Castillo-Moreno, C.\",\"Epstein, J. M.\",\"Halpern, N. Y.\",\"Gasparinetti, S.\"],\"key\":\"aamir_thermally_2023\",\"id\":\"aamir_thermally_2023\",\"bibbaseid\":\"aamir-suria-guzmn-castillomoreno-epstein-halpern-gasparinetti-thermallydrivenquantumrefrigeratorautonomouslyresetssuperconductingqubit-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2305.16710\"},\"keyword\":[\"Condensed Matter - Statistical Mechanics\",\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"},{\"bibtype\":\"article\",\"type\":\"article\",\"title\":\"Thermodynamics of decoherence\",\"volume\":\"479\",\"issn\":\"1364-5021, 1471-2946\",\"url\":\"http://arxiv.org/abs/2107.14216\",\"doi\":\"10.1098/rspa.2023.0040\",\"abstract\":\"We investigate the nonequilibrium thermodynamics of pure decoherence. In a pure decoherence process, the system Hamiltonian is a constant of motion and there is no direct energy exchange between the system and its surroundings. Nevertheless, the environment's energy is not generally conserved and in this work we show that this leads to nontrivial heat dissipation as a result of decoherence alone. This heat has some very distinctive properties: it obeys an integral fluctuation relation and can be interpreted in terms of the entropy production associated with populations in the energy eigenbasis of the initial state. We show that the heat distribution for a pure decoherence process is different from the distribution of work done by the initial system-bath interaction quench. Instead, it corresponds to a mixture of work distributions of cyclical processes, each conditioned on a state of the open system. Inspired by recent experiments on impurities in ultra-cold gases, we demonstrate our general results by studying the heat generated by the decoherence of a qubit immersed within a degenerate Fermi gas in the lowest band of a species-selective optical lattice.\",\"number\":\"2272\",\"urldate\":\"2024-01-05\",\"journal\":\"Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences\",\"author\":[{\"propositions\":[],\"lastnames\":[\"Popovic\"],\"firstnames\":[\"Maria\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Mitchison\"],\"firstnames\":[\"Mark\",\"T.\"],\"suffixes\":[]},{\"propositions\":[],\"lastnames\":[\"Goold\"],\"firstnames\":[\"John\"],\"suffixes\":[]}],\"month\":\"April\",\"year\":\"2023\",\"note\":\"arXiv:2107.14216 [cond-mat, physics:quant-ph]\",\"keywords\":\"Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Quantum Gases, Condensed Matter - Statistical Mechanics, Quantum Physics\",\"pages\":\"20230040\",\"bibtex\":\"@article{popovic_thermodynamics_2023,\\n\\ttitle = {Thermodynamics of decoherence},\\n\\tvolume = {479},\\n\\tissn = {1364-5021, 1471-2946},\\n\\turl = {http://arxiv.org/abs/2107.14216},\\n\\tdoi = {10.1098/rspa.2023.0040},\\n\\tabstract = {We investigate the nonequilibrium thermodynamics of pure decoherence. In a pure decoherence process, the system Hamiltonian is a constant of motion and there is no direct energy exchange between the system and its surroundings. Nevertheless, the environment's energy is not generally conserved and in this work we show that this leads to nontrivial heat dissipation as a result of decoherence alone. This heat has some very distinctive properties: it obeys an integral fluctuation relation and can be interpreted in terms of the entropy production associated with populations in the energy eigenbasis of the initial state. We show that the heat distribution for a pure decoherence process is different from the distribution of work done by the initial system-bath interaction quench. Instead, it corresponds to a mixture of work distributions of cyclical processes, each conditioned on a state of the open system. Inspired by recent experiments on impurities in ultra-cold gases, we demonstrate our general results by studying the heat generated by the decoherence of a qubit immersed within a degenerate Fermi gas in the lowest band of a species-selective optical lattice.},\\n\\tnumber = {2272},\\n\\turldate = {2024-01-05},\\n\\tjournal = {Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences},\\n\\tauthor = {Popovic, Maria and Mitchison, Mark T. and Goold, John},\\n\\tmonth = apr,\\n\\tyear = {2023},\\n\\tnote = {arXiv:2107.14216 [cond-mat, physics:quant-ph]},\\n\\tkeywords = {Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Quantum Gases, Condensed Matter - Statistical Mechanics, Quantum Physics},\\n\\tpages = {20230040},\\n}\\n\",\"author_short\":[\"Popovic, M.\",\"Mitchison, M. T.\",\"Goold, J.\"],\"key\":\"popovic_thermodynamics_2023\",\"id\":\"popovic_thermodynamics_2023\",\"bibbaseid\":\"popovic-mitchison-goold-thermodynamicsofdecoherence-2023\",\"role\":\"author\",\"urls\":{\"Paper\":\"http://arxiv.org/abs/2107.14216\"},\"keyword\":[\"Condensed Matter - Mesoscale and Nanoscale Physics\",\"Condensed Matter - Quantum Gases\",\"Condensed Matter - Statistical Mechanics\",\"Quantum Physics\"],\"metadata\":{\"authorlinks\":{}},\"html\":\"\"}],\n      metadata: {\"authorlinks\":{}},\n      ownerID: undefined\n    };\n  </script>\n\n  <script type=\"text/javascript\">\n  var site$;\n  if (typeof $ != 'undefined') {\n    console.log('existing jquery: storing and then restoring');\n    site$ = $;\n    $ = null;\n  }\n  </script>\n\n  <script src=\"https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js\">\n  </script>\n  <script type=\"text/javascript\">\n  if (site$) {\n    console.log('existing jquery: avoiding conflict and restoring');\n    bb$ = $.noConflict(true);\n    $ = site$;\n  } else {\n    bb$ = $;\n  }\n  </script>\n\n  <script src=\"//bibbase.org/js/bibbase.min.js\"\n          type=\"text/javascript\">\n  </script>\n\n  <script type=\"text/javascript\"\n          src=\"https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML\">\n  </script>\n  <script type=\"text/x-mathjax-config\">\n    MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\\\(','\\\\)']]},\n                        skipTags: [\"body\"],\n                        processClass: \"bibbase_paper\"});\n  </script>\n\n  <style>\n  @media print {\n    .dontprint {\n        display: none !important;\n    }\n\n  .bibbase_group {\n    background-color: #E0E0E0;\n    font-style: italic;\n    font-size: larger;\n    text-shadow: 0px 0px 3px #FFFFFF;\n    border-radius: 4px 4px 4px 4px;\n    -moz-border-radius: 4px 4px 4px 4px;\n    -webkit-border-radius: 4px;\n    padding: 5px 40px 5px;\n    margin-top: 10px;\n    margin-bottom: 5px;\n    cursor: pointer;\n  }\n\n  .bibbase_paper {\n    margin-bottom: 5px;\n  }\n\n  }\n  </style>\n\n  \n  <div style=\"float: right; margin-right: 10px; margin-top: 10px; text-align: right; font-size: 12px\">\n    generated by\n    <a href=\"//bibbase.org\"\n       onclick=\"trackOutboundLink('bibbase', 'logo clicked', window.location.href, '//bibbase.org'); return false;\">\n      <img src=\"//bibbase.org/img/logo.svg\"\n           style=\"vertical-align: middle; margin-left: 3px; height: 16px;\"/\n           alt=\"bibbase.org\"\n           title=\"BibBase – The easiest way to maintain your publications page.\"\n        ></a>\n    \n  </div>\n  \n\n  <div id=\"bibbase_header\" class=\"dontprint\" style=\"\">\n\n    <ul class=\"nav nav-pills\" style=\"margin: 0px;\">\n\n      <li class=\"dropdown\" id=\"groupby_dropdown\">\n      <a class=\"dropdown-toggle\"\n         data-toggle=\"dropdown\"\n         href=\"#\">\n          Group by\n          <b class=\"caret\"></b>\n      </a>\n      <ul class=\"dropdown-menu\">\n        <li class=\"groupby year\"><a onclick=\"groupby('year')\">\n            Year</a>\n        </li>\n        <li class=\"groupby author\"><a onclick=\"groupby('author_short')\">\n            Author</a>\n        </li>\n        <li class=\"groupby type\"><a onclick=\"groupby('type')\">\n            Type</a>\n        </li>\n        <li class=\"groupby keyword\"><a onclick=\"groupby('keyword')\">\n            Keyword</a>\n        </li>\n        <li class=\"groupby downloads\"><a onclick=\"groupby('downloads')\">\n            Downloads</a>\n        </li>\n      </ul>\n      </li>\n\n\n      <li class=\"dropdown\" id=\"menu_dropdown\">\n      <a class=\"dropdown-toggle\"\n         data-toggle=\"dropdown\"\n         href=\"#\" alt=\"controls\">\n          <i class=\"fa fa-reorder\" alt=\"controls\"></i>\n          <b class=\"caret\"></b>\n      </a>\n      <ul class=\"dropdown-menu\">\n        <li>\n          <a onclick=\"toggleAll()\">\n            <i class=\"fa fa-chevron-down fa-fw\"></i> Expand/Collapse All\n          </a>\n        </li>\n        <li>\n          <a download=\"items\" href=\"data:text/bibtex;base64,@article{ganardi_quantitative_2024,
	title = {Quantitative {Nonclassicality} of {Mediated} {Interactions}},
	volume = {5},
	url = {https://link.aps.org/doi/10.1103/PRXQuantum.5.010318},
	doi = {10.1103/PRXQuantum.5.010318},
	abstract = {In a plethora of physical situations, one can distinguish a mediator—a system that couples other, noninteracting, systems. Often, the mediator itself is not directly accessible to experimentation, yet it is interesting and sometimes crucial to understand if it admits nonclassical properties. An example of this sort that has recently been enjoying considerable attention is that of two quantum masses coupled via a gravitational field. It has been argued that the gain of quantum entanglement between the masses indicates nonclassicality of the states of the whole tripartite system. Here, we focus on the nonclassical properties of the involved interactions rather than the states. We derive inequalities the violation of which indicates noncommutativity and nondecomposability (open-system generalization of noncommuting unitaries) of interactions through the mediators. The derivations are based on properties of general quantum formalism and make minimalistic assumptions about the studied systems; in particular, the interactions can remain uncharacterized throughout the assessment. Furthermore, we also present conditions that solely use correlations between the coupled systems, excluding the need to measure the mediator. Next, we show that the amount of violation places a lower bound on suitably defined degree of nondecomposability. This makes the methods quantitative and at the same time experiment ready. We give applications of these techniques in two different fields: for detecting the nonclassicality of gravitational interaction and in bounding the Trotter error in quantum simulations.},
	number = {1},
	urldate = {2024-06-24},
	journal = {PRX Quantum},
	author = {Ganardi, Ray and Panwar, Ekta and Pandit, Mahasweta and Woloncewicz, Bianka and Paterek, Tomasz},
	month = feb,
	year = {2024},
	note = {Publisher: American Physical Society},
	pages = {010318},
}



@misc{taranto_efficiently_2024,
	title = {Efficiently {Cooling} {Quantum} {Systems} with {Finite} {Resources}: {Insights} from {Thermodynamic} {Geometry}},
	shorttitle = {Efficiently {Cooling} {Quantum} {Systems} with {Finite} {Resources}},
	url = {http://arxiv.org/abs/2404.06649},
	doi = {10.48550/arXiv.2404.06649},
	abstract = {Landauer's universal limit on heat dissipation during information erasure becomes increasingly crucial as computing devices shrink: minimising heat-induced errors demands optimal pure-state preparation. For this, however, Nernst's third law posits an infinite-resource requirement: either energy, time, or control complexity must diverge. Here, we address the practical challenge of efficiently cooling quantum systems using finite resources. We investigate the ensuing resource trade-offs and present efficient protocols for finite distinct energy gaps in settings pertaining to coherent or incoherent control, corresponding to quantum batteries and heat engines, respectively. Expressing energy bounds through thermodynamic length, our findings illuminate the optimal distribution of energy gaps, detailing the resource limitations of preparing pure states in practical settings.},
	urldate = {2024-06-04},
	publisher = {arXiv},
	author = {Taranto, Philip and Lipka-Bartosik, Patryk and Rodríguez-Briones, Nayeli A. and Perarnau-Llobet, Martí and Friis, Nicolai and Huber, Marcus and Bakhshinezhad, Pharnam},
	month = apr,
	year = {2024},
	note = {arXiv:2404.06649 [quant-ph]},
	keywords = {Quantum Physics},
}



@misc{lacerda_entropy_2023,
	title = {Entropy production in the mesoscopic-leads formulation of quantum thermodynamics},
	url = {http://arxiv.org/abs/2312.12513},
	doi = {10.48550/arXiv.2312.12513},
	abstract = {Understanding the entropy production of systems strongly coupled to thermal baths is a core problem of both quantum thermodynamics and mesoscopic physics. While there exist many techniques to accurately study entropy production in such systems, they typically require a microscopic description of the baths, which can become numerically intractable to study for large systems. Alternatively an open-systems approach can be employed with all the nuances associated with various levels of approximation. Recently, the mesoscopic leads approach has emerged as a powerful method for studying such quantum systems strongly coupled to multiple thermal baths. In this method, a set of discretised lead modes, each locally damped, provide a Markovian embedding. Here we show that this method proves extremely useful to describe entropy production of a strongly coupled open quantum system. We show numerically, for both non-interacting and interacting setups, that a system coupled to a single bath exhibits a thermal fixed point at the level of the embedding. This allows us to use various results from the thermodynamics of quantum dynamical semi-groups to infer the non-equilibrium thermodynamics of the strongly coupled, non-Markovian central systems. In particular, we show that the entropy production in the transient regime recovers the well established microscopic definitions of entropy production with a correction that can be computed explicitly for both the single- and multiple-lead cases.},
	urldate = {2024-06-04},
	publisher = {arXiv},
	author = {Lacerda, Artur and Kewming, Michael J. and Brenes, Marlon and Jackson, Conor and Clark, Stephen R. and Mitchison, Mark T. and Goold, John},
	month = dec,
	year = {2023},
	note = {arXiv:2312.12513 [cond-mat, physics:quant-ph]},
	keywords = {Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Statistical Mechanics, Quantum Physics},
}



@misc{li_entanglement_2024,
	title = {Entanglement signature in quantum work statistics in the slow-driving regime},
	url = {http://arxiv.org/abs/2405.17121},
	doi = {10.48550/arXiv.2405.17121},
	abstract = {In slowly driven classical systems, work is a stochastic quantity and its probability distribution is known to satisfy the work fluctuation-dissipation relation, which states that the mean and variance of the dissipated work are linearly related. Recently, it was shown that generation of quantum coherence in the instantaneous energy eigenbasis leads to a correction to this linear relation in the slow-driving regime. Here, we go even further by investigating nonclassical features of work fluctuations in setups with more than one system. To do this, we first generalize slow control protocols to encompass multipartite systems, allowing for the generation of quantum correlations during the driving process. Then, focussing on two-qubit systems, we show that entanglement generation leads to a positive contribution to the dissipated work, which is distinct from the quantum correction due to local coherence generation known from previous work. Our results show that entanglement generated during slow control protocols, e.g. as an unavoidable consequence of qubit crosstalk, comes at the cost of increased dissipation.},
	urldate = {2024-06-04},
	publisher = {arXiv},
	author = {Li, Jian and Mitchison, Mark T. and Moreira, Saulo V.},
	month = may,
	year = {2024},
	note = {arXiv:2405.17121 [cond-mat, physics:quant-ph]},
	keywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},
}



@misc{lorenzo_distribution_2024,
	title = {Distribution of {Fidelity} in {Quantum} {State} {Transfer} {Protocols}},
	url = {http://arxiv.org/abs/2405.02721},
	doi = {10.48550/arXiv.2405.02721},
	abstract = {Quantum state transfer protocols are a major toolkit in many quantum information processing tasks, from quantum key distribution to quantum computation. To assess performance of a such a protocol, one often relies on the average fidelity between the input and the output states. Going beyond this scheme, we analyze the entire probability distribution of fidelity, providing a general framework to derive it for the transfer of single- and two-qubit states. Starting from the delta-like shape of the fidelity distribution, characteristic to perfect transfer, we analyze its broadening and deformation due to realistic features of the process, including non-perfect read-out timing. Different models of quantum transfer, sharing the same value of the average fidelity, display different distributions of fidelity, providing thus additional information on the protocol, including the minimum fidelity.},
	urldate = {2024-06-04},
	publisher = {arXiv},
	author = {Lorenzo, Salvatore and Plastina, Francesco and Apollaro, Tony J. G. and Consiglio, Mirko and Życzkowski, Karol},
	month = may,
	year = {2024},
	note = {arXiv:2405.02721 [quant-ph]},
	keywords = {Quantum Physics},
}



@misc{sundelin_quantum_2024,
	title = {Quantum refrigeration powered by noise in a superconducting circuit},
	url = {http://arxiv.org/abs/2403.03373},
	abstract = {While dephasing noise frequently presents obstacles for quantum devices, it can become an asset in the context of a Brownian-type quantum refrigerator. Here we demonstrate a novel quantum thermal machine that leverages noise-assisted quantum transport to fuel a cooling engine in steady state. The device exploits symmetry-selective couplings between a superconducting artificial molecule and two microwave waveguides. These waveguides act as thermal reservoirs of different temperatures, which we regulate by employing synthesized thermal fields. We inject dephasing noise through a third channel that is longitudinally coupled to an artificial atom of the molecule. By varying the relative temperatures of the reservoirs, and measuring heat currents with a resolution below 1 aW, we demonstrate that the device can be operated as a quantum heat engine, thermal accelerator, and refrigerator. Our findings open new avenues for investigating quantum thermodynamics using superconducting quantum machines coupled to thermal microwave waveguides.},
	urldate = {2024-03-07},
	publisher = {arXiv},
	author = {Sundelin, Simon and Aamir, Mohammed Ali and Kulkarni, Vyom Manish and Castillo-Moreno, Claudia and Gasparinetti, Simone},
	month = mar,
	year = {2024},
	note = {arXiv:2403.03373 [quant-ph]},
	keywords = {Quantum Physics},
}



@misc{meier_autonomous_2024,
	title = {Autonomous {Quantum} {Processing} {Unit}: {What} does it take to construct a self-contained model for quantum computation?},
	shorttitle = {Autonomous {Quantum} {Processing} {Unit}},
	url = {http://arxiv.org/abs/2402.00111},
	doi = {10.48550/arXiv.2402.00111},
	abstract = {Computation is an input-output process, where a program encoding a problem to be solved is inserted into a machine that outputs a solution. Whilst a formalism for quantum Turing machines which lifts this input-output feature into the quantum domain has been developed, this is not how quantum computation is physically conceived. Usually, such a quantum computation is enacted by the manipulation of macroscopic control interactions according to a program executed by a classical system. To understand the fundamental limits of computation, especially in relation to the resources required, it is pivotal to work with a fully self-contained description of a quantum computation where computational and thermodynamic resources are not be obscured by the classical control. To this end, we answer the question; "Can we build a physical model for quantum computation that is fully autonomous?", i.e., where the program to be executed as well as the control are both quantum. We do so by developing a framework that we dub the autonomous Quantum Processing Unit (aQPU). This machine, consisting of a timekeeping mechanism, instruction register and computational system allows an agent to input their problem and receive the solution as an output, autonomously. Using the theory of open quantum systems and results from the field of quantum clocks we are able to use the aQPU as a formalism to investigate relationships between the thermodynamics, complexity, speed and fidelity of a desired quantum computation.},
	urldate = {2024-02-09},
	publisher = {arXiv},
	author = {Meier, Florian and Huber, Marcus and Erker, Paul and Xuereb, Jake},
	month = jan,
	year = {2024},
	note = {arXiv:2402.00111 [quant-ph]},
	keywords = {Quantum Physics},
}



@article{moreira_stochastic_2023,
	title = {Stochastic thermodynamics of a quantum dot coupled to a finite-size reservoir},
	volume = {131},
	issn = {0031-9007, 1079-7114},
	url = {http://arxiv.org/abs/2307.06679},
	doi = {10.1103/PhysRevLett.131.220405},
	abstract = {In nano-scale systems coupled to finite-size reservoirs, the reservoir temperature may fluctuate due to heat exchange between the system and the reservoirs. To date, a stochastic thermodynamic analysis of heat, work and entropy production in such systems is however missing. Here we fill this gap by analyzing a single-level quantum dot tunnel coupled to a finite-size electronic reservoir. The system dynamics is described by a Markovian master equation, depending on the fluctuating temperature of the reservoir. Based on a fluctuation theorem, we identify the appropriate entropy production that results in a thermodynamically consistent statistical description. We illustrate our results by analyzing the work production for a finite-size reservoir Szilard engine.},
	number = {22},
	urldate = {2024-01-17},
	journal = {Physical Review Letters},
	author = {Moreira, Saulo V. and Samuelsson, Peter and Potts, Patrick P.},
	month = dec,
	year = {2023},
	note = {arXiv:2307.06679 [cond-mat, physics:quant-ph]},
	keywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},
	pages = {220405},
}



@misc{guzman_divincenzo-like_2023,
	title = {{DiVincenzo}-like criteria for autonomous quantum machines},
	url = {http://arxiv.org/abs/2307.08739},
	doi = {10.48550/arXiv.2307.08739},
	abstract = {Controlled quantum machines have matured significantly. A natural next step is to grant them autonomy, freeing them from timed external control. For example, autonomy could unfetter quantum computers from classical control wires that heat and decohere them; and an autonomous quantum refrigerator recently reset superconducting qubits to near their ground states, as is necessary before a computation. What conditions are necessary for realizing useful autonomous quantum machines? Inspired by recent quantum thermodynamics and chemistry, we posit conditions analogous to DiVincenzo's criteria for quantum computing. Our criteria are intended to foment and guide the development of useful autonomous quantum machines.},
	urldate = {2024-01-17},
	publisher = {arXiv},
	author = {Guzmán, José Antonio Marín and Erker, Paul and Gasparinetti, Simone and Huber, Marcus and Halpern, Nicole Yunger},
	month = jul,
	year = {2023},
	note = {arXiv:2307.08739 [cond-mat, physics:physics, physics:quant-ph]},
	keywords = {Condensed Matter - Statistical Mechanics, Physics - Biological Physics, Physics - Chemical Physics, Quantum Physics},
}



@article{xuereb_impact_2023,
	title = {The {Impact} of {Imperfect} {Timekeeping} on {Quantum} {Control}},
	volume = {131},
	issn = {0031-9007, 1079-7114},
	url = {http://arxiv.org/abs/2301.10767},
	doi = {10.1103/PhysRevLett.131.160204},
	abstract = {In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter which no physical clock can ever perfectly characterise. In this letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.},
	number = {16},
	urldate = {2024-01-17},
	journal = {Physical Review Letters},
	author = {Xuereb, Jake and Meier, Florian and Erker, Paul and Mitchison, Mark T. and Huber, Marcus},
	month = oct,
	year = {2023},
	note = {arXiv:2301.10767 [quant-ph]},
	keywords = {Quantum Physics},
	pages = {160204},
}



@misc{culhane_powering_2023,
	title = {Powering an autonomous clock with quantum electromechanics},
	url = {http://arxiv.org/abs/2307.09122},
	doi = {10.48550/arXiv.2307.09122},
	abstract = {We theoretically analyse an autonomous clock comprising a nanoelectromechanical system, which undergoes self-oscillations driven by electron tunnelling. The periodic mechanical motion behaves as the clockwork, similar to the swinging of a pendulum, while induced oscillations in the electrical current can be used to read out the ticks. We simulate the dynamics of the system in the quasi-adiabatic limit of slow mechanical motion, allowing us to infer statistical properties of the clock's ticks from the current auto-correlation function. The distribution of individual ticks exhibits a tradeoff between accuracy, resolution, and dissipation, as expected from previous literature. Going beyond the distribution of individual ticks, we investigate how clock accuracy varies over different integration times by computing the Allan variance. We observe non-monotonic features in the Allan variance as a function of time and applied voltage, which can be explained by the presence of temporal correlations between ticks. These correlations are shown to yield a precision advantage for timekeeping over the timescales that the correlations persist. Our results illustrate the non-trivial features of the tick series produced by nanoscale clocks, and pave the way for experimental investigation of clock thermodynamics using nanoelectromechanical systems.},
	urldate = {2024-01-17},
	publisher = {arXiv},
	author = {Culhane, Oisin and Kewming, Michael J. and Silva, Alessandro and Goold, John and Mitchison, Mark T.},
	month = jul,
	year = {2023},
	note = {arXiv:2307.09122 [quant-ph]},
	keywords = {Quantum Physics},
}



@article{xuereb_impact_2023-1,
	title = {Impact of {Imperfect} {Timekeeping} on {Quantum} {Control}},
	volume = {131},
	url = {https://link.aps.org/doi/10.1103/PhysRevLett.131.160204},
	doi = {10.1103/PhysRevLett.131.160204},
	abstract = {In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter that no physical clock can ever perfectly characterize. In this Letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.},
	number = {16},
	urldate = {2024-01-17},
	journal = {Physical Review Letters},
	author = {Xuereb, Jake and Erker, Paul and Meier, Florian and Mitchison, Mark T. and Huber, Marcus},
	month = oct,
	year = {2023},
	note = {Publisher: American Physical Society},
	pages = {160204},
}



@misc{landi_current_2023,
	title = {Current fluctuations in open quantum systems: {Bridging} the gap between quantum continuous measurements and full counting statistics},
	shorttitle = {Current fluctuations in open quantum systems},
	url = {http://arxiv.org/abs/2303.04270},
	doi = {10.48550/arXiv.2303.04270},
	abstract = {Continuously measured quantum systems are characterized by an output current, in the form of a stochastic and correlated time series which conveys crucial information about the underlying quantum system. The many tools used to describe current fluctuations are scattered across different communities: quantum opticians often use stochastic master equations, while a prevalent approach in condensed matter physics is provided by full counting statistics. These, however, are simply different sides of the same coin. Our goal with this tutorial is to provide a unified toolbox for describing current fluctuations. This not only provides novel insights, by bringing together different fields in physics, but also yields various analytical and numerical tools for computing quantities of interest. We illustrate our results with various pedagogical examples, and connect them with topical fields of research, such as waiting-time statistics, quantum metrology, thermodynamic uncertainty relations, quantum point contacts and Maxwell's demons.},
	urldate = {2024-01-17},
	publisher = {arXiv},
	author = {Landi, Gabriel T. and Kewming, Michael J. and Mitchison, Mark T. and Potts, Patrick P.},
	month = apr,
	year = {2023},
	note = {arXiv:2303.04270 [cond-mat, physics:quant-ph]},
	keywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},
}



@article{meier_fundamental_2023,
	title = {Fundamental accuracy-resolution trade-off for timekeeping devices},
	volume = {131},
	issn = {0031-9007, 1079-7114},
	url = {http://arxiv.org/abs/2301.05173},
	doi = {10.1103/PhysRevLett.131.220201},
	abstract = {From a thermodynamic point of view, all clocks are driven by irreversible processes. Additionally, one can use oscillatory systems to temporally modulate the thermodynamic flux towards equilibrium. Focusing on the most elementary thermalization events, this modulation can be thought of as a temporal probability concentration for these events. There are two fundamental factors limiting the performance of clocks: On the one level, the inevitable drifts of the oscillatory system, which are addressed by finding stable atomic or nuclear transitions that lead to astounding precision of today's clocks. On the other level, there is the intrinsically stochastic nature of the irreversible events upon which the clock's operation is based. This becomes relevant when seeking to maximize a clock's resolution at high accuracy, which is ultimately limited by the number of such stochastic events per reference time unit. We address this essential trade-off between clock accuracy and resolution, proving a universal bound for all clocks whose elementary thermalization events are memoryless.},
	number = {22},
	urldate = {2024-01-17},
	journal = {Physical Review Letters},
	author = {Meier, Florian and Schwarzhans, Emanuel and Erker, Paul and Huber, Marcus},
	month = nov,
	year = {2023},
	note = {arXiv:2301.05173 [quant-ph]},
	keywords = {Quantum Physics},
	pages = {220201},
}



@misc{meier_energy-consumption_2023,
	title = {Energy-{Consumption} {Advantage} of {Quantum} {Computation}},
	url = {http://arxiv.org/abs/2305.11212},
	doi = {10.48550/arXiv.2305.11212},
	abstract = {Energy consumption in solving computational problems has been gaining growing attention as a part of the performance measures of computers. Quantum computation is known to offer advantages over classical computation in terms of various computational resources; however, its advantage in energy consumption has been challenging to analyze due to the lack of a theoretical foundation to relate the physical notion of energy and the computer-scientific notion of complexity for quantum computation with finite computational resources. To bridge this gap, we introduce a general framework for studying the energy consumption of quantum and classical computation based on a computational model that has been conventionally used for studying query complexity in computational complexity theory. With this framework, we derive an upper bound for the achievable energy consumption of quantum computation. We also develop techniques for proving a nonzero lower bound of energy consumption of classical computation based on the energy-conservation law and Landauer's principle. With these general bounds, we rigorously prove that quantum computation achieves an exponential energy-consumption advantage over classical computation for solving a specific computational problem, Simon's problem. Furthermore, we clarify how to demonstrate this energy-consumption advantage of quantum computation in an experimental setting. These results provide a fundamental framework and techniques to explore the physical meaning of quantum advantage in the query-complexity setting based on energy consumption, opening an alternative way to study the advantages of quantum computation.},
	urldate = {2024-01-17},
	publisher = {arXiv},
	author = {Meier, Florian and Yamasaki, Hayata},
	month = sep,
	year = {2023},
	note = {arXiv:2305.11212 [quant-ph]},
	keywords = {Quantum Physics},
}



@misc{aamir_thermally_2023,
	title = {Thermally driven quantum refrigerator autonomously resets superconducting qubit},
	url = {http://arxiv.org/abs/2305.16710},
	doi = {10.48550/arXiv.2305.16710},
	abstract = {The first thermal machines steered the industrial revolution, but their quantum analogs have yet to prove useful. Here, we demonstrate a useful quantum absorption refrigerator formed from superconducting circuits. We use it to reset a transmon qubit to a temperature lower than that achievable with any one available bath. The process is driven by a thermal gradient and is autonomous -- requires no external control. The refrigerator exploits an engineered three-body interaction between the target qubit and two auxiliary qudits coupled to thermal environments. The environments consist of microwave waveguides populated with synthesized thermal photons. The target qubit, if initially fully excited, reaches a steady-state excited-level population of \$5{\textbackslash}times10{\textasciicircum}\{-4\} {\textbackslash}pm 5{\textbackslash}times10{\textasciicircum}\{-4\}\$ (an effective temperature of 23.5{\textasciitilde}mK) in about 1.6{\textasciitilde}\${\textbackslash}mu\$s. Our results epitomize how quantum thermal machines can be leveraged for quantum information-processing tasks. They also initiate a path toward experimental studies of quantum thermodynamics with superconducting circuits coupled to propagating thermal microwave fields.},
	urldate = {2024-01-05},
	publisher = {arXiv},
	author = {Aamir, Mohammed Ali and Suria, Paul Jamet and Guzmán, José Antonio Marín and Castillo-Moreno, Claudia and Epstein, Jeffrey M. and Halpern, Nicole Yunger and Gasparinetti, Simone},
	month = may,
	year = {2023},
	note = {arXiv:2305.16710 [cond-mat, physics:quant-ph]},
	keywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},
}



@article{popovic_thermodynamics_2023,
	title = {Thermodynamics of decoherence},
	volume = {479},
	issn = {1364-5021, 1471-2946},
	url = {http://arxiv.org/abs/2107.14216},
	doi = {10.1098/rspa.2023.0040},
	abstract = {We investigate the nonequilibrium thermodynamics of pure decoherence. In a pure decoherence process, the system Hamiltonian is a constant of motion and there is no direct energy exchange between the system and its surroundings. Nevertheless, the environment's energy is not generally conserved and in this work we show that this leads to nontrivial heat dissipation as a result of decoherence alone. This heat has some very distinctive properties: it obeys an integral fluctuation relation and can be interpreted in terms of the entropy production associated with populations in the energy eigenbasis of the initial state. We show that the heat distribution for a pure decoherence process is different from the distribution of work done by the initial system-bath interaction quench. Instead, it corresponds to a mixture of work distributions of cyclical processes, each conditioned on a state of the open system. Inspired by recent experiments on impurities in ultra-cold gases, we demonstrate our general results by studying the heat generated by the decoherence of a qubit immersed within a degenerate Fermi gas in the lowest band of a species-selective optical lattice.},
	number = {2272},
	urldate = {2024-01-05},
	journal = {Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences},
	author = {Popovic, Maria and Mitchison, Mark T. and Goold, John},
	month = apr,
	year = {2023},
	note = {arXiv:2107.14216 [cond-mat, physics:quant-ph]},
	keywords = {Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Quantum Gases, Condensed Matter - Statistical Mechanics, Quantum Physics},
	pages = {20230040},
}
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February 2024.\n  <span class=\"note\">Publisher: American Physical Society</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"https://link.aps.org/doi/10.1103/PRXQuantum.5.010318\"\n     onclick=\"log_download('ganardi-panwar-pandit-woloncewicz-paterek-quantitativenonclassicalityofmediatedinteractions-2024', 'https://link.aps.org/doi/10.1103/PRXQuantum.5.010318', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Quantitative Nonclassicality of Mediated Interactions [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1103/PRXQuantum.5.010318\"\n     onclick=\"log_download('ganardi-panwar-pandit-woloncewicz-paterek-quantitativenonclassicalityofmediatedinteractions-2024', 'http://doi.org/10.1103/PRXQuantum.5.010318', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/ganardi-panwar-pandit-woloncewicz-paterek-quantitativenonclassicalityofmediatedinteractions-2024\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('ganardi-panwar-pandit-woloncewicz-paterek-quantitativenonclassicalityofmediatedinteractions-2024')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{ganardi_quantitative_2024,\n\ttitle = {Quantitative {Nonclassicality} of {Mediated} {Interactions}},\n\tvolume = {5},\n\turl = {https://link.aps.org/doi/10.1103/PRXQuantum.5.010318},\n\tdoi = {10.1103/PRXQuantum.5.010318},\n\tabstract = {In a plethora of physical situations, one can distinguish a mediator—a system that couples other, noninteracting, systems. Often, the mediator itself is not directly accessible to experimentation, yet it is interesting and sometimes crucial to understand if it admits nonclassical properties. An example of this sort that has recently been enjoying considerable attention is that of two quantum masses coupled via a gravitational field. It has been argued that the gain of quantum entanglement between the masses indicates nonclassicality of the states of the whole tripartite system. Here, we focus on the nonclassical properties of the involved interactions rather than the states. We derive inequalities the violation of which indicates noncommutativity and nondecomposability (open-system generalization of noncommuting unitaries) of interactions through the mediators. The derivations are based on properties of general quantum formalism and make minimalistic assumptions about the studied systems; in particular, the interactions can remain uncharacterized throughout the assessment. Furthermore, we also present conditions that solely use correlations between the coupled systems, excluding the need to measure the mediator. Next, we show that the amount of violation places a lower bound on suitably defined degree of nondecomposability. This makes the methods quantitative and at the same time experiment ready. We give applications of these techniques in two different fields: for detecting the nonclassicality of gravitational interaction and in bounding the Trotter error in quantum simulations.},\n\tnumber = {1},\n\turldate = {2024-06-24},\n\tjournal = {PRX Quantum},\n\tauthor = {Ganardi, Ray and Panwar, Ekta and Pandit, Mahasweta and Woloncewicz, Bianka and Paterek, Tomasz},\n\tmonth = feb,\n\tyear = {2024},\n\tnote = {Publisher: American Physical Society},\n\tpages = {010318},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  In a plethora of physical situations, one can distinguish a mediator—a system that couples other, noninteracting, systems. Often, the mediator itself is not directly accessible to experimentation, yet it is interesting and sometimes crucial to understand if it admits nonclassical properties. An example of this sort that has recently been enjoying considerable attention is that of two quantum masses coupled via a gravitational field. It has been argued that the gain of quantum entanglement between the masses indicates nonclassicality of the states of the whole tripartite system. Here, we focus on the nonclassical properties of the involved interactions rather than the states. We derive inequalities the violation of which indicates noncommutativity and nondecomposability (open-system generalization of noncommuting unitaries) of interactions through the mediators. The derivations are based on properties of general quantum formalism and make minimalistic assumptions about the studied systems; in particular, the interactions can remain uncharacterized throughout the assessment. Furthermore, we also present conditions that solely use correlations between the coupled systems, excluding the need to measure the mediator. Next, we show that the amount of violation places a lower bound on suitably defined degree of nondecomposability. This makes the methods quantitative and at the same time experiment ready. We give applications of these techniques in two different fields: for detecting the nonclassicality of gravitational interaction and in bounding the Trotter error in quantum simulations.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"taranto-lipkabartosik-rodrguezbriones-perarnaullobet-friis-huber-bakhshinezhad-efficientlycoolingquantumsystemswithfiniteresourcesinsightsfromthermodynamicgeometry-2024\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2404.06649\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'taranto-lipkabartosik-rodrguezbriones-perarnaullobet-friis-huber-bakhshinezhad-efficientlycoolingquantumsystemswithfiniteresourcesinsightsfromthermodynamicgeometry-2024', 'http://arxiv.org/abs/2404.06649', event);\">\n    Efficiently Cooling Quantum Systems with Finite Resources: Insights from Thermodynamic Geometry.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Taranto, P.; Lipka-Bartosik, P.; Rodríguez-Briones, N. A.; Perarnau-Llobet, M.; Friis, N.; Huber, M.;  and Bakhshinezhad, P.\n</span>\n\n  \n\n</span>\n\n  April 2024.\n  <span class=\"note\">arXiv:2404.06649 [quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2404.06649\"\n     onclick=\"log_download('taranto-lipkabartosik-rodrguezbriones-perarnaullobet-friis-huber-bakhshinezhad-efficientlycoolingquantumsystemswithfiniteresourcesinsightsfromthermodynamicgeometry-2024', 'http://arxiv.org/abs/2404.06649', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Efficiently Cooling Quantum Systems with Finite Resources: Insights from Thermodynamic Geometry [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2404.06649\"\n     onclick=\"log_download('taranto-lipkabartosik-rodrguezbriones-perarnaullobet-friis-huber-bakhshinezhad-efficientlycoolingquantumsystemswithfiniteresourcesinsightsfromthermodynamicgeometry-2024', 'http://doi.org/10.48550/arXiv.2404.06649', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/taranto-lipkabartosik-rodrguezbriones-perarnaullobet-friis-huber-bakhshinezhad-efficientlycoolingquantumsystemswithfiniteresourcesinsightsfromthermodynamicgeometry-2024\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('taranto-lipkabartosik-rodrguezbriones-perarnaullobet-friis-huber-bakhshinezhad-efficientlycoolingquantumsystemswithfiniteresourcesinsightsfromthermodynamicgeometry-2024')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{taranto_efficiently_2024,\n\ttitle = {Efficiently {Cooling} {Quantum} {Systems} with {Finite} {Resources}: {Insights} from {Thermodynamic} {Geometry}},\n\tshorttitle = {Efficiently {Cooling} {Quantum} {Systems} with {Finite} {Resources}},\n\turl = {http://arxiv.org/abs/2404.06649},\n\tdoi = {10.48550/arXiv.2404.06649},\n\tabstract = {Landauer&#x27;s universal limit on heat dissipation during information erasure becomes increasingly crucial as computing devices shrink: minimising heat-induced errors demands optimal pure-state preparation. For this, however, Nernst&#x27;s third law posits an infinite-resource requirement: either energy, time, or control complexity must diverge. Here, we address the practical challenge of efficiently cooling quantum systems using finite resources. We investigate the ensuing resource trade-offs and present efficient protocols for finite distinct energy gaps in settings pertaining to coherent or incoherent control, corresponding to quantum batteries and heat engines, respectively. Expressing energy bounds through thermodynamic length, our findings illuminate the optimal distribution of energy gaps, detailing the resource limitations of preparing pure states in practical settings.},\n\turldate = {2024-06-04},\n\tpublisher = {arXiv},\n\tauthor = {Taranto, Philip and Lipka-Bartosik, Patryk and Rodríguez-Briones, Nayeli A. and Perarnau-Llobet, Martí and Friis, Nicolai and Huber, Marcus and Bakhshinezhad, Pharnam},\n\tmonth = apr,\n\tyear = {2024},\n\tnote = {arXiv:2404.06649 [quant-ph]},\n\tkeywords = {Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Landauer's universal limit on heat dissipation during information erasure becomes increasingly crucial as computing devices shrink: minimising heat-induced errors demands optimal pure-state preparation. For this, however, Nernst's third law posits an infinite-resource requirement: either energy, time, or control complexity must diverge. Here, we address the practical challenge of efficiently cooling quantum systems using finite resources. We investigate the ensuing resource trade-offs and present efficient protocols for finite distinct energy gaps in settings pertaining to coherent or incoherent control, corresponding to quantum batteries and heat engines, respectively. Expressing energy bounds through thermodynamic length, our findings illuminate the optimal distribution of energy gaps, detailing the resource limitations of preparing pure states in practical settings.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"li-mitchison-moreira-entanglementsignatureinquantumworkstatisticsintheslowdrivingregime-2024\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2405.17121\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'li-mitchison-moreira-entanglementsignatureinquantumworkstatisticsintheslowdrivingregime-2024', 'http://arxiv.org/abs/2405.17121', event);\">\n    Entanglement signature in quantum work statistics in the slow-driving regime.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Li, J.; Mitchison, M. T.;  and Moreira, S. V.\n</span>\n\n  \n\n</span>\n\n  May 2024.\n  <span class=\"note\">arXiv:2405.17121 [cond-mat, physics:quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2405.17121\"\n     onclick=\"log_download('li-mitchison-moreira-entanglementsignatureinquantumworkstatisticsintheslowdrivingregime-2024', 'http://arxiv.org/abs/2405.17121', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Entanglement signature in quantum work statistics in the slow-driving regime [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2405.17121\"\n     onclick=\"log_download('li-mitchison-moreira-entanglementsignatureinquantumworkstatisticsintheslowdrivingregime-2024', 'http://doi.org/10.48550/arXiv.2405.17121', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/li-mitchison-moreira-entanglementsignatureinquantumworkstatisticsintheslowdrivingregime-2024\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('li-mitchison-moreira-entanglementsignatureinquantumworkstatisticsintheslowdrivingregime-2024')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{li_entanglement_2024,\n\ttitle = {Entanglement signature in quantum work statistics in the slow-driving regime},\n\turl = {http://arxiv.org/abs/2405.17121},\n\tdoi = {10.48550/arXiv.2405.17121},\n\tabstract = {In slowly driven classical systems, work is a stochastic quantity and its probability distribution is known to satisfy the work fluctuation-dissipation relation, which states that the mean and variance of the dissipated work are linearly related. Recently, it was shown that generation of quantum coherence in the instantaneous energy eigenbasis leads to a correction to this linear relation in the slow-driving regime. Here, we go even further by investigating nonclassical features of work fluctuations in setups with more than one system. To do this, we first generalize slow control protocols to encompass multipartite systems, allowing for the generation of quantum correlations during the driving process. Then, focussing on two-qubit systems, we show that entanglement generation leads to a positive contribution to the dissipated work, which is distinct from the quantum correction due to local coherence generation known from previous work. Our results show that entanglement generated during slow control protocols, e.g. as an unavoidable consequence of qubit crosstalk, comes at the cost of increased dissipation.},\n\turldate = {2024-06-04},\n\tpublisher = {arXiv},\n\tauthor = {Li, Jian and Mitchison, Mark T. and Moreira, Saulo V.},\n\tmonth = may,\n\tyear = {2024},\n\tnote = {arXiv:2405.17121 [cond-mat, physics:quant-ph]},\n\tkeywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  In slowly driven classical systems, work is a stochastic quantity and its probability distribution is known to satisfy the work fluctuation-dissipation relation, which states that the mean and variance of the dissipated work are linearly related. Recently, it was shown that generation of quantum coherence in the instantaneous energy eigenbasis leads to a correction to this linear relation in the slow-driving regime. Here, we go even further by investigating nonclassical features of work fluctuations in setups with more than one system. To do this, we first generalize slow control protocols to encompass multipartite systems, allowing for the generation of quantum correlations during the driving process. Then, focussing on two-qubit systems, we show that entanglement generation leads to a positive contribution to the dissipated work, which is distinct from the quantum correction due to local coherence generation known from previous work. Our results show that entanglement generated during slow control protocols, e.g. as an unavoidable consequence of qubit crosstalk, comes at the cost of increased dissipation.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"lorenzo-plastina-apollaro-consiglio-yczkowski-distributionoffidelityinquantumstatetransferprotocols-2024\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2405.02721\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'lorenzo-plastina-apollaro-consiglio-yczkowski-distributionoffidelityinquantumstatetransferprotocols-2024', 'http://arxiv.org/abs/2405.02721', event);\">\n    Distribution of Fidelity in Quantum State Transfer Protocols.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Lorenzo, S.; Plastina, F.; Apollaro, T. J. G.; Consiglio, M.;  and Życzkowski, K.\n</span>\n\n  \n\n</span>\n\n  May 2024.\n  <span class=\"note\">arXiv:2405.02721 [quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2405.02721\"\n     onclick=\"log_download('lorenzo-plastina-apollaro-consiglio-yczkowski-distributionoffidelityinquantumstatetransferprotocols-2024', 'http://arxiv.org/abs/2405.02721', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Distribution of Fidelity in Quantum State Transfer Protocols [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2405.02721\"\n     onclick=\"log_download('lorenzo-plastina-apollaro-consiglio-yczkowski-distributionoffidelityinquantumstatetransferprotocols-2024', 'http://doi.org/10.48550/arXiv.2405.02721', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/lorenzo-plastina-apollaro-consiglio-yczkowski-distributionoffidelityinquantumstatetransferprotocols-2024\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('lorenzo-plastina-apollaro-consiglio-yczkowski-distributionoffidelityinquantumstatetransferprotocols-2024')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{lorenzo_distribution_2024,\n\ttitle = {Distribution of {Fidelity} in {Quantum} {State} {Transfer} {Protocols}},\n\turl = {http://arxiv.org/abs/2405.02721},\n\tdoi = {10.48550/arXiv.2405.02721},\n\tabstract = {Quantum state transfer protocols are a major toolkit in many quantum information processing tasks, from quantum key distribution to quantum computation. To assess performance of a such a protocol, one often relies on the average fidelity between the input and the output states. Going beyond this scheme, we analyze the entire probability distribution of fidelity, providing a general framework to derive it for the transfer of single- and two-qubit states. Starting from the delta-like shape of the fidelity distribution, characteristic to perfect transfer, we analyze its broadening and deformation due to realistic features of the process, including non-perfect read-out timing. Different models of quantum transfer, sharing the same value of the average fidelity, display different distributions of fidelity, providing thus additional information on the protocol, including the minimum fidelity.},\n\turldate = {2024-06-04},\n\tpublisher = {arXiv},\n\tauthor = {Lorenzo, Salvatore and Plastina, Francesco and Apollaro, Tony J. G. and Consiglio, Mirko and Życzkowski, Karol},\n\tmonth = may,\n\tyear = {2024},\n\tnote = {arXiv:2405.02721 [quant-ph]},\n\tkeywords = {Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Quantum state transfer protocols are a major toolkit in many quantum information processing tasks, from quantum key distribution to quantum computation. To assess performance of a such a protocol, one often relies on the average fidelity between the input and the output states. Going beyond this scheme, we analyze the entire probability distribution of fidelity, providing a general framework to derive it for the transfer of single- and two-qubit states. Starting from the delta-like shape of the fidelity distribution, characteristic to perfect transfer, we analyze its broadening and deformation due to realistic features of the process, including non-perfect read-out timing. Different models of quantum transfer, sharing the same value of the average fidelity, display different distributions of fidelity, providing thus additional information on the protocol, including the minimum fidelity.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"sundelin-aamir-kulkarni-castillomoreno-gasparinetti-quantumrefrigerationpoweredbynoiseinasuperconductingcircuit-2024\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2403.03373\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'sundelin-aamir-kulkarni-castillomoreno-gasparinetti-quantumrefrigerationpoweredbynoiseinasuperconductingcircuit-2024', 'http://arxiv.org/abs/2403.03373', event);\">\n    Quantum refrigeration powered by noise in a superconducting circuit.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Sundelin, S.; Aamir, M. A.; Kulkarni, V. M.; Castillo-Moreno, C.;  and Gasparinetti, S.\n</span>\n\n  \n\n</span>\n\n  March 2024.\n  <span class=\"note\">arXiv:2403.03373 [quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2403.03373\"\n     onclick=\"log_download('sundelin-aamir-kulkarni-castillomoreno-gasparinetti-quantumrefrigerationpoweredbynoiseinasuperconductingcircuit-2024', 'http://arxiv.org/abs/2403.03373', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Quantum refrigeration powered by noise in a superconducting circuit [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/sundelin-aamir-kulkarni-castillomoreno-gasparinetti-quantumrefrigerationpoweredbynoiseinasuperconductingcircuit-2024\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n  &nbsp;\n  <span class=\"bibbase_stats_paper\" style=\"color: #777;\">\n    <span>1 download</span>\n  </span>\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('sundelin-aamir-kulkarni-castillomoreno-gasparinetti-quantumrefrigerationpoweredbynoiseinasuperconductingcircuit-2024')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{sundelin_quantum_2024,\n\ttitle = {Quantum refrigeration powered by noise in a superconducting circuit},\n\turl = {http://arxiv.org/abs/2403.03373},\n\tabstract = {While dephasing noise frequently presents obstacles for quantum devices, it can become an asset in the context of a Brownian-type quantum refrigerator. Here we demonstrate a novel quantum thermal machine that leverages noise-assisted quantum transport to fuel a cooling engine in steady state. The device exploits symmetry-selective couplings between a superconducting artificial molecule and two microwave waveguides. These waveguides act as thermal reservoirs of different temperatures, which we regulate by employing synthesized thermal fields. We inject dephasing noise through a third channel that is longitudinally coupled to an artificial atom of the molecule. By varying the relative temperatures of the reservoirs, and measuring heat currents with a resolution below 1 aW, we demonstrate that the device can be operated as a quantum heat engine, thermal accelerator, and refrigerator. Our findings open new avenues for investigating quantum thermodynamics using superconducting quantum machines coupled to thermal microwave waveguides.},\n\turldate = {2024-03-07},\n\tpublisher = {arXiv},\n\tauthor = {Sundelin, Simon and Aamir, Mohammed Ali and Kulkarni, Vyom Manish and Castillo-Moreno, Claudia and Gasparinetti, Simone},\n\tmonth = mar,\n\tyear = {2024},\n\tnote = {arXiv:2403.03373 [quant-ph]},\n\tkeywords = {Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  While dephasing noise frequently presents obstacles for quantum devices, it can become an asset in the context of a Brownian-type quantum refrigerator. Here we demonstrate a novel quantum thermal machine that leverages noise-assisted quantum transport to fuel a cooling engine in steady state. The device exploits symmetry-selective couplings between a superconducting artificial molecule and two microwave waveguides. These waveguides act as thermal reservoirs of different temperatures, which we regulate by employing synthesized thermal fields. We inject dephasing noise through a third channel that is longitudinally coupled to an artificial atom of the molecule. By varying the relative temperatures of the reservoirs, and measuring heat currents with a resolution below 1 aW, we demonstrate that the device can be operated as a quantum heat engine, thermal accelerator, and refrigerator. Our findings open new avenues for investigating quantum thermodynamics using superconducting quantum machines coupled to thermal microwave waveguides.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"meier-huber-erker-xuereb-autonomousquantumprocessingunitwhatdoesittaketoconstructaselfcontainedmodelforquantumcomputation-2024\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2402.00111\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'meier-huber-erker-xuereb-autonomousquantumprocessingunitwhatdoesittaketoconstructaselfcontainedmodelforquantumcomputation-2024', 'http://arxiv.org/abs/2402.00111', event);\">\n    Autonomous Quantum Processing Unit: What does it take to construct a self-contained model for quantum computation?.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Meier, F.; Huber, M.; Erker, P.;  and Xuereb, J.\n</span>\n\n  \n\n</span>\n\n  January 2024.\n  <span class=\"note\">arXiv:2402.00111 [quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2402.00111\"\n     onclick=\"log_download('meier-huber-erker-xuereb-autonomousquantumprocessingunitwhatdoesittaketoconstructaselfcontainedmodelforquantumcomputation-2024', 'http://arxiv.org/abs/2402.00111', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Autonomous Quantum Processing Unit: What does it take to construct a self-contained model for quantum computation? [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2402.00111\"\n     onclick=\"log_download('meier-huber-erker-xuereb-autonomousquantumprocessingunitwhatdoesittaketoconstructaselfcontainedmodelforquantumcomputation-2024', 'http://doi.org/10.48550/arXiv.2402.00111', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/meier-huber-erker-xuereb-autonomousquantumprocessingunitwhatdoesittaketoconstructaselfcontainedmodelforquantumcomputation-2024\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('meier-huber-erker-xuereb-autonomousquantumprocessingunitwhatdoesittaketoconstructaselfcontainedmodelforquantumcomputation-2024')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{meier_autonomous_2024,\n\ttitle = {Autonomous {Quantum} {Processing} {Unit}: {What} does it take to construct a self-contained model for quantum computation?},\n\tshorttitle = {Autonomous {Quantum} {Processing} {Unit}},\n\turl = {http://arxiv.org/abs/2402.00111},\n\tdoi = {10.48550/arXiv.2402.00111},\n\tabstract = {Computation is an input-output process, where a program encoding a problem to be solved is inserted into a machine that outputs a solution. Whilst a formalism for quantum Turing machines which lifts this input-output feature into the quantum domain has been developed, this is not how quantum computation is physically conceived. Usually, such a quantum computation is enacted by the manipulation of macroscopic control interactions according to a program executed by a classical system. To understand the fundamental limits of computation, especially in relation to the resources required, it is pivotal to work with a fully self-contained description of a quantum computation where computational and thermodynamic resources are not be obscured by the classical control. To this end, we answer the question; &quot;Can we build a physical model for quantum computation that is fully autonomous?&quot;, i.e., where the program to be executed as well as the control are both quantum. We do so by developing a framework that we dub the autonomous Quantum Processing Unit (aQPU). This machine, consisting of a timekeeping mechanism, instruction register and computational system allows an agent to input their problem and receive the solution as an output, autonomously. Using the theory of open quantum systems and results from the field of quantum clocks we are able to use the aQPU as a formalism to investigate relationships between the thermodynamics, complexity, speed and fidelity of a desired quantum computation.},\n\turldate = {2024-02-09},\n\tpublisher = {arXiv},\n\tauthor = {Meier, Florian and Huber, Marcus and Erker, Paul and Xuereb, Jake},\n\tmonth = jan,\n\tyear = {2024},\n\tnote = {arXiv:2402.00111 [quant-ph]},\n\tkeywords = {Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Computation is an input-output process, where a program encoding a problem to be solved is inserted into a machine that outputs a solution. Whilst a formalism for quantum Turing machines which lifts this input-output feature into the quantum domain has been developed, this is not how quantum computation is physically conceived. Usually, such a quantum computation is enacted by the manipulation of macroscopic control interactions according to a program executed by a classical system. To understand the fundamental limits of computation, especially in relation to the resources required, it is pivotal to work with a fully self-contained description of a quantum computation where computational and thermodynamic resources are not be obscured by the classical control. To this end, we answer the question; \"Can we build a physical model for quantum computation that is fully autonomous?\", i.e., where the program to be executed as well as the control are both quantum. We do so by developing a framework that we dub the autonomous Quantum Processing Unit (aQPU). This machine, consisting of a timekeeping mechanism, instruction register and computational system allows an agent to input their problem and receive the solution as an output, autonomously. Using the theory of open quantum systems and results from the field of quantum clocks we are able to use the aQPU as a formalism to investigate relationships between the thermodynamics, complexity, speed and fidelity of a desired quantum computation.\n</div>\n\n\n</div>\n\n\n\n\n\n    </div>\n  </div>\n\n  <div class=\"bibbase_group_whole\" id=\"group_2023\">\n    <div class=\"bibbase_group\"\n      onclick=\"toggleGroup('group_2023')\"\n      onkeypress=\"toggleGroup('group_2023')\"\n      tabindex=\"0\">\n      <i class=\"fa fa-angle-down bibbase_group_head_icon\"></i>&nbsp;\n      <span>2023</span>\n      <span class=\"bibbase_group_count\">\n        \n        (11)\n        \n      </span>\n    </div>\n    <div class=\"bibbase_group_body\">\n      \n  \n  <div class=\"bibbase_paper\" id=\"lacerda-kewming-brenes-jackson-clark-mitchison-goold-entropyproductioninthemesoscopicleadsformulationofquantumthermodynamics-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2312.12513\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'lacerda-kewming-brenes-jackson-clark-mitchison-goold-entropyproductioninthemesoscopicleadsformulationofquantumthermodynamics-2023', 'http://arxiv.org/abs/2312.12513', event);\">\n    Entropy production in the mesoscopic-leads formulation of quantum thermodynamics.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Lacerda, A.; Kewming, M. J.; Brenes, M.; Jackson, C.; Clark, S. R.; Mitchison, M. T.;  and Goold, J.\n</span>\n\n  \n\n</span>\n\n  December 2023.\n  <span class=\"note\">arXiv:2312.12513 [cond-mat, physics:quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2312.12513\"\n     onclick=\"log_download('lacerda-kewming-brenes-jackson-clark-mitchison-goold-entropyproductioninthemesoscopicleadsformulationofquantumthermodynamics-2023', 'http://arxiv.org/abs/2312.12513', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Entropy production in the mesoscopic-leads formulation of quantum thermodynamics [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2312.12513\"\n     onclick=\"log_download('lacerda-kewming-brenes-jackson-clark-mitchison-goold-entropyproductioninthemesoscopicleadsformulationofquantumthermodynamics-2023', 'http://doi.org/10.48550/arXiv.2312.12513', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/lacerda-kewming-brenes-jackson-clark-mitchison-goold-entropyproductioninthemesoscopicleadsformulationofquantumthermodynamics-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('lacerda-kewming-brenes-jackson-clark-mitchison-goold-entropyproductioninthemesoscopicleadsformulationofquantumthermodynamics-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{lacerda_entropy_2023,\n\ttitle = {Entropy production in the mesoscopic-leads formulation of quantum thermodynamics},\n\turl = {http://arxiv.org/abs/2312.12513},\n\tdoi = {10.48550/arXiv.2312.12513},\n\tabstract = {Understanding the entropy production of systems strongly coupled to thermal baths is a core problem of both quantum thermodynamics and mesoscopic physics. While there exist many techniques to accurately study entropy production in such systems, they typically require a microscopic description of the baths, which can become numerically intractable to study for large systems. Alternatively an open-systems approach can be employed with all the nuances associated with various levels of approximation. Recently, the mesoscopic leads approach has emerged as a powerful method for studying such quantum systems strongly coupled to multiple thermal baths. In this method, a set of discretised lead modes, each locally damped, provide a Markovian embedding. Here we show that this method proves extremely useful to describe entropy production of a strongly coupled open quantum system. We show numerically, for both non-interacting and interacting setups, that a system coupled to a single bath exhibits a thermal fixed point at the level of the embedding. This allows us to use various results from the thermodynamics of quantum dynamical semi-groups to infer the non-equilibrium thermodynamics of the strongly coupled, non-Markovian central systems. In particular, we show that the entropy production in the transient regime recovers the well established microscopic definitions of entropy production with a correction that can be computed explicitly for both the single- and multiple-lead cases.},\n\turldate = {2024-06-04},\n\tpublisher = {arXiv},\n\tauthor = {Lacerda, Artur and Kewming, Michael J. and Brenes, Marlon and Jackson, Conor and Clark, Stephen R. and Mitchison, Mark T. and Goold, John},\n\tmonth = dec,\n\tyear = {2023},\n\tnote = {arXiv:2312.12513 [cond-mat, physics:quant-ph]},\n\tkeywords = {Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Statistical Mechanics, Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Understanding the entropy production of systems strongly coupled to thermal baths is a core problem of both quantum thermodynamics and mesoscopic physics. While there exist many techniques to accurately study entropy production in such systems, they typically require a microscopic description of the baths, which can become numerically intractable to study for large systems. Alternatively an open-systems approach can be employed with all the nuances associated with various levels of approximation. Recently, the mesoscopic leads approach has emerged as a powerful method for studying such quantum systems strongly coupled to multiple thermal baths. In this method, a set of discretised lead modes, each locally damped, provide a Markovian embedding. Here we show that this method proves extremely useful to describe entropy production of a strongly coupled open quantum system. We show numerically, for both non-interacting and interacting setups, that a system coupled to a single bath exhibits a thermal fixed point at the level of the embedding. This allows us to use various results from the thermodynamics of quantum dynamical semi-groups to infer the non-equilibrium thermodynamics of the strongly coupled, non-Markovian central systems. In particular, we show that the entropy production in the transient regime recovers the well established microscopic definitions of entropy production with a correction that can be computed explicitly for both the single- and multiple-lead cases.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"moreira-samuelsson-potts-stochasticthermodynamicsofaquantumdotcoupledtoafinitesizereservoir-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2307.06679\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'moreira-samuelsson-potts-stochasticthermodynamicsofaquantumdotcoupledtoafinitesizereservoir-2023', 'http://arxiv.org/abs/2307.06679', event);\">\n    Stochastic thermodynamics of a quantum dot coupled to a finite-size reservoir.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Moreira, S. V.; Samuelsson, P.;  and Potts, P. P.\n</span>\n\n  \n\n</span>\n\n  <i>Physical Review Letters</i>, 131(22): 220405. December 2023.\n  <span class=\"note\">arXiv:2307.06679 [cond-mat, physics:quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2307.06679\"\n     onclick=\"log_download('moreira-samuelsson-potts-stochasticthermodynamicsofaquantumdotcoupledtoafinitesizereservoir-2023', 'http://arxiv.org/abs/2307.06679', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Stochastic thermodynamics of a quantum dot coupled to a finite-size reservoir [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1103/PhysRevLett.131.220405\"\n     onclick=\"log_download('moreira-samuelsson-potts-stochasticthermodynamicsofaquantumdotcoupledtoafinitesizereservoir-2023', 'http://doi.org/10.1103/PhysRevLett.131.220405', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/moreira-samuelsson-potts-stochasticthermodynamicsofaquantumdotcoupledtoafinitesizereservoir-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('moreira-samuelsson-potts-stochasticthermodynamicsofaquantumdotcoupledtoafinitesizereservoir-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{moreira_stochastic_2023,\n\ttitle = {Stochastic thermodynamics of a quantum dot coupled to a finite-size reservoir},\n\tvolume = {131},\n\tissn = {0031-9007, 1079-7114},\n\turl = {http://arxiv.org/abs/2307.06679},\n\tdoi = {10.1103/PhysRevLett.131.220405},\n\tabstract = {In nano-scale systems coupled to finite-size reservoirs, the reservoir temperature may fluctuate due to heat exchange between the system and the reservoirs. To date, a stochastic thermodynamic analysis of heat, work and entropy production in such systems is however missing. Here we fill this gap by analyzing a single-level quantum dot tunnel coupled to a finite-size electronic reservoir. The system dynamics is described by a Markovian master equation, depending on the fluctuating temperature of the reservoir. Based on a fluctuation theorem, we identify the appropriate entropy production that results in a thermodynamically consistent statistical description. We illustrate our results by analyzing the work production for a finite-size reservoir Szilard engine.},\n\tnumber = {22},\n\turldate = {2024-01-17},\n\tjournal = {Physical Review Letters},\n\tauthor = {Moreira, Saulo V. and Samuelsson, Peter and Potts, Patrick P.},\n\tmonth = dec,\n\tyear = {2023},\n\tnote = {arXiv:2307.06679 [cond-mat, physics:quant-ph]},\n\tkeywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},\n\tpages = {220405},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  In nano-scale systems coupled to finite-size reservoirs, the reservoir temperature may fluctuate due to heat exchange between the system and the reservoirs. To date, a stochastic thermodynamic analysis of heat, work and entropy production in such systems is however missing. Here we fill this gap by analyzing a single-level quantum dot tunnel coupled to a finite-size electronic reservoir. The system dynamics is described by a Markovian master equation, depending on the fluctuating temperature of the reservoir. Based on a fluctuation theorem, we identify the appropriate entropy production that results in a thermodynamically consistent statistical description. We illustrate our results by analyzing the work production for a finite-size reservoir Szilard engine.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"guzmn-erker-gasparinetti-huber-halpern-divincenzolikecriteriaforautonomousquantummachines-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2307.08739\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'guzmn-erker-gasparinetti-huber-halpern-divincenzolikecriteriaforautonomousquantummachines-2023', 'http://arxiv.org/abs/2307.08739', event);\">\n    DiVincenzo-like criteria for autonomous quantum machines.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Guzmán, J. A. M.; Erker, P.; Gasparinetti, S.; Huber, M.;  and Halpern, N. Y.\n</span>\n\n  \n\n</span>\n\n  July 2023.\n  <span class=\"note\">arXiv:2307.08739 [cond-mat, physics:physics, physics:quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2307.08739\"\n     onclick=\"log_download('guzmn-erker-gasparinetti-huber-halpern-divincenzolikecriteriaforautonomousquantummachines-2023', 'http://arxiv.org/abs/2307.08739', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"DiVincenzo-like criteria for autonomous quantum machines [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2307.08739\"\n     onclick=\"log_download('guzmn-erker-gasparinetti-huber-halpern-divincenzolikecriteriaforautonomousquantummachines-2023', 'http://doi.org/10.48550/arXiv.2307.08739', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/guzmn-erker-gasparinetti-huber-halpern-divincenzolikecriteriaforautonomousquantummachines-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('guzmn-erker-gasparinetti-huber-halpern-divincenzolikecriteriaforautonomousquantummachines-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{guzman_divincenzo-like_2023,\n\ttitle = {{DiVincenzo}-like criteria for autonomous quantum machines},\n\turl = {http://arxiv.org/abs/2307.08739},\n\tdoi = {10.48550/arXiv.2307.08739},\n\tabstract = {Controlled quantum machines have matured significantly. A natural next step is to grant them autonomy, freeing them from timed external control. For example, autonomy could unfetter quantum computers from classical control wires that heat and decohere them; and an autonomous quantum refrigerator recently reset superconducting qubits to near their ground states, as is necessary before a computation. What conditions are necessary for realizing useful autonomous quantum machines? Inspired by recent quantum thermodynamics and chemistry, we posit conditions analogous to DiVincenzo&#x27;s criteria for quantum computing. Our criteria are intended to foment and guide the development of useful autonomous quantum machines.},\n\turldate = {2024-01-17},\n\tpublisher = {arXiv},\n\tauthor = {Guzmán, José Antonio Marín and Erker, Paul and Gasparinetti, Simone and Huber, Marcus and Halpern, Nicole Yunger},\n\tmonth = jul,\n\tyear = {2023},\n\tnote = {arXiv:2307.08739 [cond-mat, physics:physics, physics:quant-ph]},\n\tkeywords = {Condensed Matter - Statistical Mechanics, Physics - Biological Physics, Physics - Chemical Physics, Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Controlled quantum machines have matured significantly. A natural next step is to grant them autonomy, freeing them from timed external control. For example, autonomy could unfetter quantum computers from classical control wires that heat and decohere them; and an autonomous quantum refrigerator recently reset superconducting qubits to near their ground states, as is necessary before a computation. What conditions are necessary for realizing useful autonomous quantum machines? Inspired by recent quantum thermodynamics and chemistry, we posit conditions analogous to DiVincenzo's criteria for quantum computing. Our criteria are intended to foment and guide the development of useful autonomous quantum machines.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"xuereb-meier-erker-mitchison-huber-theimpactofimperfecttimekeepingonquantumcontrol-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2301.10767\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'xuereb-meier-erker-mitchison-huber-theimpactofimperfecttimekeepingonquantumcontrol-2023', 'http://arxiv.org/abs/2301.10767', event);\">\n    The Impact of Imperfect Timekeeping on Quantum Control.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Xuereb, J.; Meier, F.; Erker, P.; Mitchison, M. T.;  and Huber, M.\n</span>\n\n  \n\n</span>\n\n  <i>Physical Review Letters</i>, 131(16): 160204. October 2023.\n  <span class=\"note\">arXiv:2301.10767 [quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2301.10767\"\n     onclick=\"log_download('xuereb-meier-erker-mitchison-huber-theimpactofimperfecttimekeepingonquantumcontrol-2023', 'http://arxiv.org/abs/2301.10767', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"The Impact of Imperfect Timekeeping on Quantum Control [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1103/PhysRevLett.131.160204\"\n     onclick=\"log_download('xuereb-meier-erker-mitchison-huber-theimpactofimperfecttimekeepingonquantumcontrol-2023', 'http://doi.org/10.1103/PhysRevLett.131.160204', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/xuereb-meier-erker-mitchison-huber-theimpactofimperfecttimekeepingonquantumcontrol-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n  &nbsp;\n  <span class=\"bibbase_stats_paper\" style=\"color: #777;\">\n    <span>1 download</span>\n  </span>\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('xuereb-meier-erker-mitchison-huber-theimpactofimperfecttimekeepingonquantumcontrol-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{xuereb_impact_2023,\n\ttitle = {The {Impact} of {Imperfect} {Timekeeping} on {Quantum} {Control}},\n\tvolume = {131},\n\tissn = {0031-9007, 1079-7114},\n\turl = {http://arxiv.org/abs/2301.10767},\n\tdoi = {10.1103/PhysRevLett.131.160204},\n\tabstract = {In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter which no physical clock can ever perfectly characterise. In this letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.},\n\tnumber = {16},\n\turldate = {2024-01-17},\n\tjournal = {Physical Review Letters},\n\tauthor = {Xuereb, Jake and Meier, Florian and Erker, Paul and Mitchison, Mark T. and Huber, Marcus},\n\tmonth = oct,\n\tyear = {2023},\n\tnote = {arXiv:2301.10767 [quant-ph]},\n\tkeywords = {Quantum Physics},\n\tpages = {160204},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter which no physical clock can ever perfectly characterise. In this letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"culhane-kewming-silva-goold-mitchison-poweringanautonomousclockwithquantumelectromechanics-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2307.09122\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'culhane-kewming-silva-goold-mitchison-poweringanautonomousclockwithquantumelectromechanics-2023', 'http://arxiv.org/abs/2307.09122', event);\">\n    Powering an autonomous clock with quantum electromechanics.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Culhane, O.; Kewming, M. J.; Silva, A.; Goold, J.;  and Mitchison, M. T.\n</span>\n\n  \n\n</span>\n\n  July 2023.\n  <span class=\"note\">arXiv:2307.09122 [quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2307.09122\"\n     onclick=\"log_download('culhane-kewming-silva-goold-mitchison-poweringanautonomousclockwithquantumelectromechanics-2023', 'http://arxiv.org/abs/2307.09122', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Powering an autonomous clock with quantum electromechanics [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2307.09122\"\n     onclick=\"log_download('culhane-kewming-silva-goold-mitchison-poweringanautonomousclockwithquantumelectromechanics-2023', 'http://doi.org/10.48550/arXiv.2307.09122', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/culhane-kewming-silva-goold-mitchison-poweringanautonomousclockwithquantumelectromechanics-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('culhane-kewming-silva-goold-mitchison-poweringanautonomousclockwithquantumelectromechanics-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{culhane_powering_2023,\n\ttitle = {Powering an autonomous clock with quantum electromechanics},\n\turl = {http://arxiv.org/abs/2307.09122},\n\tdoi = {10.48550/arXiv.2307.09122},\n\tabstract = {We theoretically analyse an autonomous clock comprising a nanoelectromechanical system, which undergoes self-oscillations driven by electron tunnelling. The periodic mechanical motion behaves as the clockwork, similar to the swinging of a pendulum, while induced oscillations in the electrical current can be used to read out the ticks. We simulate the dynamics of the system in the quasi-adiabatic limit of slow mechanical motion, allowing us to infer statistical properties of the clock&#x27;s ticks from the current auto-correlation function. The distribution of individual ticks exhibits a tradeoff between accuracy, resolution, and dissipation, as expected from previous literature. Going beyond the distribution of individual ticks, we investigate how clock accuracy varies over different integration times by computing the Allan variance. We observe non-monotonic features in the Allan variance as a function of time and applied voltage, which can be explained by the presence of temporal correlations between ticks. These correlations are shown to yield a precision advantage for timekeeping over the timescales that the correlations persist. Our results illustrate the non-trivial features of the tick series produced by nanoscale clocks, and pave the way for experimental investigation of clock thermodynamics using nanoelectromechanical systems.},\n\turldate = {2024-01-17},\n\tpublisher = {arXiv},\n\tauthor = {Culhane, Oisin and Kewming, Michael J. and Silva, Alessandro and Goold, John and Mitchison, Mark T.},\n\tmonth = jul,\n\tyear = {2023},\n\tnote = {arXiv:2307.09122 [quant-ph]},\n\tkeywords = {Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  We theoretically analyse an autonomous clock comprising a nanoelectromechanical system, which undergoes self-oscillations driven by electron tunnelling. The periodic mechanical motion behaves as the clockwork, similar to the swinging of a pendulum, while induced oscillations in the electrical current can be used to read out the ticks. We simulate the dynamics of the system in the quasi-adiabatic limit of slow mechanical motion, allowing us to infer statistical properties of the clock's ticks from the current auto-correlation function. The distribution of individual ticks exhibits a tradeoff between accuracy, resolution, and dissipation, as expected from previous literature. Going beyond the distribution of individual ticks, we investigate how clock accuracy varies over different integration times by computing the Allan variance. We observe non-monotonic features in the Allan variance as a function of time and applied voltage, which can be explained by the presence of temporal correlations between ticks. These correlations are shown to yield a precision advantage for timekeeping over the timescales that the correlations persist. Our results illustrate the non-trivial features of the tick series produced by nanoscale clocks, and pave the way for experimental investigation of clock thermodynamics using nanoelectromechanical systems.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"xuereb-erker-meier-mitchison-huber-impactofimperfecttimekeepingonquantumcontrol-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"https://link.aps.org/doi/10.1103/PhysRevLett.131.160204\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'xuereb-erker-meier-mitchison-huber-impactofimperfecttimekeepingonquantumcontrol-2023', 'https://link.aps.org/doi/10.1103/PhysRevLett.131.160204', event);\">\n    Impact of Imperfect Timekeeping on Quantum Control.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Xuereb, J.; Erker, P.; Meier, F.; Mitchison, M. T.;  and Huber, M.\n</span>\n\n  \n\n</span>\n\n  <i>Physical Review Letters</i>, 131(16): 160204. October 2023.\n  <span class=\"note\">Publisher: American Physical Society</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"https://link.aps.org/doi/10.1103/PhysRevLett.131.160204\"\n     onclick=\"log_download('xuereb-erker-meier-mitchison-huber-impactofimperfecttimekeepingonquantumcontrol-2023', 'https://link.aps.org/doi/10.1103/PhysRevLett.131.160204', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Impact of Imperfect Timekeeping on Quantum Control [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1103/PhysRevLett.131.160204\"\n     onclick=\"log_download('xuereb-erker-meier-mitchison-huber-impactofimperfecttimekeepingonquantumcontrol-2023', 'http://doi.org/10.1103/PhysRevLett.131.160204', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/xuereb-erker-meier-mitchison-huber-impactofimperfecttimekeepingonquantumcontrol-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('xuereb-erker-meier-mitchison-huber-impactofimperfecttimekeepingonquantumcontrol-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{xuereb_impact_2023-1,\n\ttitle = {Impact of {Imperfect} {Timekeeping} on {Quantum} {Control}},\n\tvolume = {131},\n\turl = {https://link.aps.org/doi/10.1103/PhysRevLett.131.160204},\n\tdoi = {10.1103/PhysRevLett.131.160204},\n\tabstract = {In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter that no physical clock can ever perfectly characterize. In this Letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.},\n\tnumber = {16},\n\turldate = {2024-01-17},\n\tjournal = {Physical Review Letters},\n\tauthor = {Xuereb, Jake and Erker, Paul and Meier, Florian and Mitchison, Mark T. and Huber, Marcus},\n\tmonth = oct,\n\tyear = {2023},\n\tnote = {Publisher: American Physical Society},\n\tpages = {160204},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  In order to unitarily evolve a quantum system, an agent requires knowledge of time, a parameter that no physical clock can ever perfectly characterize. In this Letter, we study how limitations on acquiring knowledge of time impact controlled quantum operations in different paradigms. We show that the quality of timekeeping an agent has access to limits the circuit complexity they are able to achieve within circuit-based quantum computation. We do this by deriving an upper bound on the average gate fidelity achievable under imperfect timekeeping for a general class of random circuits. Another area where quantum control is relevant is quantum thermodynamics. In that context, we show that cooling a qubit can be achieved using a timer of arbitrary quality for control: timekeeping error only impacts the rate of cooling and not the achievable temperature. Our analysis combines techniques from the study of autonomous quantum clocks and the theory of quantum channels to understand the effect of imperfect timekeeping on controlled quantum dynamics.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"landi-kewming-mitchison-potts-currentfluctuationsinopenquantumsystemsbridgingthegapbetweenquantumcontinuousmeasurementsandfullcountingstatistics-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2303.04270\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'landi-kewming-mitchison-potts-currentfluctuationsinopenquantumsystemsbridgingthegapbetweenquantumcontinuousmeasurementsandfullcountingstatistics-2023', 'http://arxiv.org/abs/2303.04270', event);\">\n    Current fluctuations in open quantum systems: Bridging the gap between quantum continuous measurements and full counting statistics.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Landi, G. T.; Kewming, M. J.; Mitchison, M. T.;  and Potts, P. P.\n</span>\n\n  \n\n</span>\n\n  April 2023.\n  <span class=\"note\">arXiv:2303.04270 [cond-mat, physics:quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2303.04270\"\n     onclick=\"log_download('landi-kewming-mitchison-potts-currentfluctuationsinopenquantumsystemsbridgingthegapbetweenquantumcontinuousmeasurementsandfullcountingstatistics-2023', 'http://arxiv.org/abs/2303.04270', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Current fluctuations in open quantum systems: Bridging the gap between quantum continuous measurements and full counting statistics [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2303.04270\"\n     onclick=\"log_download('landi-kewming-mitchison-potts-currentfluctuationsinopenquantumsystemsbridgingthegapbetweenquantumcontinuousmeasurementsandfullcountingstatistics-2023', 'http://doi.org/10.48550/arXiv.2303.04270', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/landi-kewming-mitchison-potts-currentfluctuationsinopenquantumsystemsbridgingthegapbetweenquantumcontinuousmeasurementsandfullcountingstatistics-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('landi-kewming-mitchison-potts-currentfluctuationsinopenquantumsystemsbridgingthegapbetweenquantumcontinuousmeasurementsandfullcountingstatistics-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{landi_current_2023,\n\ttitle = {Current fluctuations in open quantum systems: {Bridging} the gap between quantum continuous measurements and full counting statistics},\n\tshorttitle = {Current fluctuations in open quantum systems},\n\turl = {http://arxiv.org/abs/2303.04270},\n\tdoi = {10.48550/arXiv.2303.04270},\n\tabstract = {Continuously measured quantum systems are characterized by an output current, in the form of a stochastic and correlated time series which conveys crucial information about the underlying quantum system. The many tools used to describe current fluctuations are scattered across different communities: quantum opticians often use stochastic master equations, while a prevalent approach in condensed matter physics is provided by full counting statistics. These, however, are simply different sides of the same coin. Our goal with this tutorial is to provide a unified toolbox for describing current fluctuations. This not only provides novel insights, by bringing together different fields in physics, but also yields various analytical and numerical tools for computing quantities of interest. We illustrate our results with various pedagogical examples, and connect them with topical fields of research, such as waiting-time statistics, quantum metrology, thermodynamic uncertainty relations, quantum point contacts and Maxwell&#x27;s demons.},\n\turldate = {2024-01-17},\n\tpublisher = {arXiv},\n\tauthor = {Landi, Gabriel T. and Kewming, Michael J. and Mitchison, Mark T. and Potts, Patrick P.},\n\tmonth = apr,\n\tyear = {2023},\n\tnote = {arXiv:2303.04270 [cond-mat, physics:quant-ph]},\n\tkeywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Continuously measured quantum systems are characterized by an output current, in the form of a stochastic and correlated time series which conveys crucial information about the underlying quantum system. The many tools used to describe current fluctuations are scattered across different communities: quantum opticians often use stochastic master equations, while a prevalent approach in condensed matter physics is provided by full counting statistics. These, however, are simply different sides of the same coin. Our goal with this tutorial is to provide a unified toolbox for describing current fluctuations. This not only provides novel insights, by bringing together different fields in physics, but also yields various analytical and numerical tools for computing quantities of interest. We illustrate our results with various pedagogical examples, and connect them with topical fields of research, such as waiting-time statistics, quantum metrology, thermodynamic uncertainty relations, quantum point contacts and Maxwell's demons.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"meier-schwarzhans-erker-huber-fundamentalaccuracyresolutiontradeofffortimekeepingdevices-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2301.05173\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'meier-schwarzhans-erker-huber-fundamentalaccuracyresolutiontradeofffortimekeepingdevices-2023', 'http://arxiv.org/abs/2301.05173', event);\">\n    Fundamental accuracy-resolution trade-off for timekeeping devices.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Meier, F.; Schwarzhans, E.; Erker, P.;  and Huber, M.\n</span>\n\n  \n\n</span>\n\n  <i>Physical Review Letters</i>, 131(22): 220201. November 2023.\n  <span class=\"note\">arXiv:2301.05173 [quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2301.05173\"\n     onclick=\"log_download('meier-schwarzhans-erker-huber-fundamentalaccuracyresolutiontradeofffortimekeepingdevices-2023', 'http://arxiv.org/abs/2301.05173', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Fundamental accuracy-resolution trade-off for timekeeping devices [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1103/PhysRevLett.131.220201\"\n     onclick=\"log_download('meier-schwarzhans-erker-huber-fundamentalaccuracyresolutiontradeofffortimekeepingdevices-2023', 'http://doi.org/10.1103/PhysRevLett.131.220201', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/meier-schwarzhans-erker-huber-fundamentalaccuracyresolutiontradeofffortimekeepingdevices-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('meier-schwarzhans-erker-huber-fundamentalaccuracyresolutiontradeofffortimekeepingdevices-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{meier_fundamental_2023,\n\ttitle = {Fundamental accuracy-resolution trade-off for timekeeping devices},\n\tvolume = {131},\n\tissn = {0031-9007, 1079-7114},\n\turl = {http://arxiv.org/abs/2301.05173},\n\tdoi = {10.1103/PhysRevLett.131.220201},\n\tabstract = {From a thermodynamic point of view, all clocks are driven by irreversible processes. Additionally, one can use oscillatory systems to temporally modulate the thermodynamic flux towards equilibrium. Focusing on the most elementary thermalization events, this modulation can be thought of as a temporal probability concentration for these events. There are two fundamental factors limiting the performance of clocks: On the one level, the inevitable drifts of the oscillatory system, which are addressed by finding stable atomic or nuclear transitions that lead to astounding precision of today&#x27;s clocks. On the other level, there is the intrinsically stochastic nature of the irreversible events upon which the clock&#x27;s operation is based. This becomes relevant when seeking to maximize a clock&#x27;s resolution at high accuracy, which is ultimately limited by the number of such stochastic events per reference time unit. We address this essential trade-off between clock accuracy and resolution, proving a universal bound for all clocks whose elementary thermalization events are memoryless.},\n\tnumber = {22},\n\turldate = {2024-01-17},\n\tjournal = {Physical Review Letters},\n\tauthor = {Meier, Florian and Schwarzhans, Emanuel and Erker, Paul and Huber, Marcus},\n\tmonth = nov,\n\tyear = {2023},\n\tnote = {arXiv:2301.05173 [quant-ph]},\n\tkeywords = {Quantum Physics},\n\tpages = {220201},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  From a thermodynamic point of view, all clocks are driven by irreversible processes. Additionally, one can use oscillatory systems to temporally modulate the thermodynamic flux towards equilibrium. Focusing on the most elementary thermalization events, this modulation can be thought of as a temporal probability concentration for these events. There are two fundamental factors limiting the performance of clocks: On the one level, the inevitable drifts of the oscillatory system, which are addressed by finding stable atomic or nuclear transitions that lead to astounding precision of today's clocks. On the other level, there is the intrinsically stochastic nature of the irreversible events upon which the clock's operation is based. This becomes relevant when seeking to maximize a clock's resolution at high accuracy, which is ultimately limited by the number of such stochastic events per reference time unit. We address this essential trade-off between clock accuracy and resolution, proving a universal bound for all clocks whose elementary thermalization events are memoryless.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"meier-yamasaki-energyconsumptionadvantageofquantumcomputation-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2305.11212\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'meier-yamasaki-energyconsumptionadvantageofquantumcomputation-2023', 'http://arxiv.org/abs/2305.11212', event);\">\n    Energy-Consumption Advantage of Quantum Computation.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Meier, F.;  and Yamasaki, H.\n</span>\n\n  \n\n</span>\n\n  September 2023.\n  <span class=\"note\">arXiv:2305.11212 [quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2305.11212\"\n     onclick=\"log_download('meier-yamasaki-energyconsumptionadvantageofquantumcomputation-2023', 'http://arxiv.org/abs/2305.11212', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Energy-Consumption Advantage of Quantum Computation [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2305.11212\"\n     onclick=\"log_download('meier-yamasaki-energyconsumptionadvantageofquantumcomputation-2023', 'http://doi.org/10.48550/arXiv.2305.11212', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/meier-yamasaki-energyconsumptionadvantageofquantumcomputation-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('meier-yamasaki-energyconsumptionadvantageofquantumcomputation-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{meier_energy-consumption_2023,\n\ttitle = {Energy-{Consumption} {Advantage} of {Quantum} {Computation}},\n\turl = {http://arxiv.org/abs/2305.11212},\n\tdoi = {10.48550/arXiv.2305.11212},\n\tabstract = {Energy consumption in solving computational problems has been gaining growing attention as a part of the performance measures of computers. Quantum computation is known to offer advantages over classical computation in terms of various computational resources; however, its advantage in energy consumption has been challenging to analyze due to the lack of a theoretical foundation to relate the physical notion of energy and the computer-scientific notion of complexity for quantum computation with finite computational resources. To bridge this gap, we introduce a general framework for studying the energy consumption of quantum and classical computation based on a computational model that has been conventionally used for studying query complexity in computational complexity theory. With this framework, we derive an upper bound for the achievable energy consumption of quantum computation. We also develop techniques for proving a nonzero lower bound of energy consumption of classical computation based on the energy-conservation law and Landauer&#x27;s principle. With these general bounds, we rigorously prove that quantum computation achieves an exponential energy-consumption advantage over classical computation for solving a specific computational problem, Simon&#x27;s problem. Furthermore, we clarify how to demonstrate this energy-consumption advantage of quantum computation in an experimental setting. These results provide a fundamental framework and techniques to explore the physical meaning of quantum advantage in the query-complexity setting based on energy consumption, opening an alternative way to study the advantages of quantum computation.},\n\turldate = {2024-01-17},\n\tpublisher = {arXiv},\n\tauthor = {Meier, Florian and Yamasaki, Hayata},\n\tmonth = sep,\n\tyear = {2023},\n\tnote = {arXiv:2305.11212 [quant-ph]},\n\tkeywords = {Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Energy consumption in solving computational problems has been gaining growing attention as a part of the performance measures of computers. Quantum computation is known to offer advantages over classical computation in terms of various computational resources; however, its advantage in energy consumption has been challenging to analyze due to the lack of a theoretical foundation to relate the physical notion of energy and the computer-scientific notion of complexity for quantum computation with finite computational resources. To bridge this gap, we introduce a general framework for studying the energy consumption of quantum and classical computation based on a computational model that has been conventionally used for studying query complexity in computational complexity theory. With this framework, we derive an upper bound for the achievable energy consumption of quantum computation. We also develop techniques for proving a nonzero lower bound of energy consumption of classical computation based on the energy-conservation law and Landauer's principle. With these general bounds, we rigorously prove that quantum computation achieves an exponential energy-consumption advantage over classical computation for solving a specific computational problem, Simon's problem. Furthermore, we clarify how to demonstrate this energy-consumption advantage of quantum computation in an experimental setting. These results provide a fundamental framework and techniques to explore the physical meaning of quantum advantage in the query-complexity setting based on energy consumption, opening an alternative way to study the advantages of quantum computation.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"aamir-suria-guzmn-castillomoreno-epstein-halpern-gasparinetti-thermallydrivenquantumrefrigeratorautonomouslyresetssuperconductingqubit-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2305.16710\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'aamir-suria-guzmn-castillomoreno-epstein-halpern-gasparinetti-thermallydrivenquantumrefrigeratorautonomouslyresetssuperconductingqubit-2023', 'http://arxiv.org/abs/2305.16710', event);\">\n    Thermally driven quantum refrigerator autonomously resets superconducting qubit.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Aamir, M. A.; Suria, P. J.; Guzmán, J. A. M.; Castillo-Moreno, C.; Epstein, J. M.; Halpern, N. Y.;  and Gasparinetti, S.\n</span>\n\n  \n\n</span>\n\n  May 2023.\n  <span class=\"note\">arXiv:2305.16710 [cond-mat, physics:quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2305.16710\"\n     onclick=\"log_download('aamir-suria-guzmn-castillomoreno-epstein-halpern-gasparinetti-thermallydrivenquantumrefrigeratorautonomouslyresetssuperconductingqubit-2023', 'http://arxiv.org/abs/2305.16710', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Thermally driven quantum refrigerator autonomously resets superconducting qubit [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.48550/arXiv.2305.16710\"\n     onclick=\"log_download('aamir-suria-guzmn-castillomoreno-epstein-halpern-gasparinetti-thermallydrivenquantumrefrigeratorautonomouslyresetssuperconductingqubit-2023', 'http://doi.org/10.48550/arXiv.2305.16710', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/aamir-suria-guzmn-castillomoreno-epstein-halpern-gasparinetti-thermallydrivenquantumrefrigeratorautonomouslyresetssuperconductingqubit-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('aamir-suria-guzmn-castillomoreno-epstein-halpern-gasparinetti-thermallydrivenquantumrefrigeratorautonomouslyresetssuperconductingqubit-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@misc{aamir_thermally_2023,\n\ttitle = {Thermally driven quantum refrigerator autonomously resets superconducting qubit},\n\turl = {http://arxiv.org/abs/2305.16710},\n\tdoi = {10.48550/arXiv.2305.16710},\n\tabstract = {The first thermal machines steered the industrial revolution, but their quantum analogs have yet to prove useful. Here, we demonstrate a useful quantum absorption refrigerator formed from superconducting circuits. We use it to reset a transmon qubit to a temperature lower than that achievable with any one available bath. The process is driven by a thermal gradient and is autonomous -- requires no external control. The refrigerator exploits an engineered three-body interaction between the target qubit and two auxiliary qudits coupled to thermal environments. The environments consist of microwave waveguides populated with synthesized thermal photons. The target qubit, if initially fully excited, reaches a steady-state excited-level population of \\$5{\\textbackslash}times10{\\textasciicircum}\\{-4\\} {\\textbackslash}pm 5{\\textbackslash}times10{\\textasciicircum}\\{-4\\}\\$ (an effective temperature of 23.5{\\textasciitilde}mK) in about 1.6{\\textasciitilde}\\${\\textbackslash}mu\\$s. Our results epitomize how quantum thermal machines can be leveraged for quantum information-processing tasks. They also initiate a path toward experimental studies of quantum thermodynamics with superconducting circuits coupled to propagating thermal microwave fields.},\n\turldate = {2024-01-05},\n\tpublisher = {arXiv},\n\tauthor = {Aamir, Mohammed Ali and Suria, Paul Jamet and Guzmán, José Antonio Marín and Castillo-Moreno, Claudia and Epstein, Jeffrey M. and Halpern, Nicole Yunger and Gasparinetti, Simone},\n\tmonth = may,\n\tyear = {2023},\n\tnote = {arXiv:2305.16710 [cond-mat, physics:quant-ph]},\n\tkeywords = {Condensed Matter - Statistical Mechanics, Quantum Physics},\n}\n\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  The first thermal machines steered the industrial revolution, but their quantum analogs have yet to prove useful. Here, we demonstrate a useful quantum absorption refrigerator formed from superconducting circuits. We use it to reset a transmon qubit to a temperature lower than that achievable with any one available bath. The process is driven by a thermal gradient and is autonomous – requires no external control. The refrigerator exploits an engineered three-body interaction between the target qubit and two auxiliary qudits coupled to thermal environments. The environments consist of microwave waveguides populated with synthesized thermal photons. The target qubit, if initially fully excited, reaches a steady-state excited-level population of $5{\\}times10{\\textasciicircum}\\{-4\\} {\\}pm 5{\\}times10{\\textasciicircum}\\{-4\\}$ (an effective temperature of 23.5~mK) in about 1.6~${\\}mu$s. Our results epitomize how quantum thermal machines can be leveraged for quantum information-processing tasks. They also initiate a path toward experimental studies of quantum thermodynamics with superconducting circuits coupled to propagating thermal microwave fields.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"popovic-mitchison-goold-thermodynamicsofdecoherence-2023\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://arxiv.org/abs/2107.14216\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'popovic-mitchison-goold-thermodynamicsofdecoherence-2023', 'http://arxiv.org/abs/2107.14216', event);\">\n    Thermodynamics of decoherence.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Popovic, M.; Mitchison, M. T.;  and Goold, J.\n</span>\n\n  \n\n</span>\n\n  <i>Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences</i>, 479(2272): 20230040. April 2023.\n  <span class=\"note\">arXiv:2107.14216 [cond-mat, physics:quant-ph]</span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://arxiv.org/abs/2107.14216\"\n     onclick=\"log_download('popovic-mitchison-goold-thermodynamicsofdecoherence-2023', 'http://arxiv.org/abs/2107.14216', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Thermodynamics of decoherence [link]\"\n       title=\"Paper\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Paper</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1098/rspa.2023.0040\"\n     onclick=\"log_download('popovic-mitchison-goold-thermodynamicsofdecoherence-2023', 'http://doi.org/10.1098/rspa.2023.0040', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/popovic-mitchison-goold-thermodynamicsofdecoherence-2023\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('popovic-mitchison-goold-thermodynamicsofdecoherence-2023')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{popovic_thermodynamics_2023,\n\ttitle = {Thermodynamics of decoherence},\n\tvolume = {479},\n\tissn = {1364-5021, 1471-2946},\n\turl = {http://arxiv.org/abs/2107.14216},\n\tdoi = {10.1098/rspa.2023.0040},\n\tabstract = {We investigate the nonequilibrium thermodynamics of pure decoherence. In a pure decoherence process, the system Hamiltonian is a constant of motion and there is no direct energy exchange between the system and its surroundings. Nevertheless, the environment&#x27;s energy is not generally conserved and in this work we show that this leads to nontrivial heat dissipation as a result of decoherence alone. This heat has some very distinctive properties: it obeys an integral fluctuation relation and can be interpreted in terms of the entropy production associated with populations in the energy eigenbasis of the initial state. We show that the heat distribution for a pure decoherence process is different from the distribution of work done by the initial system-bath interaction quench. Instead, it corresponds to a mixture of work distributions of cyclical processes, each conditioned on a state of the open system. Inspired by recent experiments on impurities in ultra-cold gases, we demonstrate our general results by studying the heat generated by the decoherence of a qubit immersed within a degenerate Fermi gas in the lowest band of a species-selective optical lattice.},\n\tnumber = {2272},\n\turldate = {2024-01-05},\n\tjournal = {Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences},\n\tauthor = {Popovic, Maria and Mitchison, Mark T. and Goold, John},\n\tmonth = apr,\n\tyear = {2023},\n\tnote = {arXiv:2107.14216 [cond-mat, physics:quant-ph]},\n\tkeywords = {Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Quantum Gases, Condensed Matter - Statistical Mechanics, Quantum Physics},\n\tpages = {20230040},\n}\n</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  We investigate the nonequilibrium thermodynamics of pure decoherence. In a pure decoherence process, the system Hamiltonian is a constant of motion and there is no direct energy exchange between the system and its surroundings. Nevertheless, the environment's energy is not generally conserved and in this work we show that this leads to nontrivial heat dissipation as a result of decoherence alone. This heat has some very distinctive properties: it obeys an integral fluctuation relation and can be interpreted in terms of the entropy production associated with populations in the energy eigenbasis of the initial state. We show that the heat distribution for a pure decoherence process is different from the distribution of work done by the initial system-bath interaction quench. Instead, it corresponds to a mixture of work distributions of cyclical processes, each conditioned on a state of the open system. Inspired by recent experiments on impurities in ultra-cold gases, we demonstrate our general results by studying the heat generated by the decoherence of a qubit immersed within a degenerate Fermi gas in the lowest band of a species-selective optical lattice.\n</div>\n\n\n</div>\n\n\n\n\n\n    </div>\n  </div>\n\n\n\n\n  </div>\n\n\n  <!-- Modal -->\n\n  <!-- <iframe id=\"bibbase_network_frame\" -->\n  <!--         src=\"//bibbase.org/network/control\" -->\n  <!--         style=\"display: none;\"> -->\n  <!-- </iframe> -->\n\n</div>\n"}; document.write(bibbase_data.data);