Optical Entanglement of Distinguishable Quantum Emitters. Levonian, D., Riedinger, R., Machielse, B., Knall, E., Bhaskar, M., Knaut, C., Bekenstein, R., Park, H., Lončar, M., & Lukin, M. Physical Review Letters, 128(21):213602, May, 2022. ![Optical Entanglement of Distinguishable Quantum Emitters [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Solid-state quantum emitters are promising candidates for the realization of quantum networks, owing to their long-lived spin memories, high-fidelity local operations, and optical connectivity for long-range entanglement. However, due to differences in local environment, solid-state emitters typically feature a range of distinct transition frequencies, which makes it challenging to create optically mediated entanglement between arbitrary emitter pairs. We propose and demonstrate an efficient method for entangling emitters with optical transitions separated by many linewidths. In our approach, electro-optic modulators enable a single photon to herald a parity measurement on a pair of spin qubits. We experimentally demonstrate the protocol using two silicon-vacancy centers in a diamond nanophotonic cavity, with optical transitions separated by 7.4 GHz. Working with distinguishable emitters allows for individual qubit addressing and readout, enabling parallel control and entanglement of both colocated and spatially separated emitters, a key step toward scaling up quantum information processing systems.
@article{levonian_optical_2022,
title = {Optical {Entanglement} of {Distinguishable} {Quantum} {Emitters}},
volume = {128},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.128.213602},
doi = {10.1103/PhysRevLett.128.213602},
abstract = {Solid-state quantum emitters are promising candidates for the realization of quantum networks, owing to their long-lived spin memories, high-fidelity local operations, and optical connectivity for long-range entanglement. However, due to differences in local environment, solid-state emitters typically feature a range of distinct transition frequencies, which makes it challenging to create optically mediated entanglement between arbitrary emitter pairs. We propose and demonstrate an efficient method for entangling emitters with optical transitions separated by many linewidths. In our approach, electro-optic modulators enable a single photon to herald a parity measurement on a pair of spin qubits. We experimentally demonstrate the protocol using two silicon-vacancy centers in a diamond nanophotonic cavity, with optical transitions separated by 7.4 GHz. Working with distinguishable emitters allows for individual qubit addressing and readout, enabling parallel control and entanglement of both colocated and spatially separated emitters, a key step toward scaling up quantum information processing systems.},
number = {21},
urldate = {2023-01-17},
journal = {Physical Review Letters},
author = {Levonian, D. S. and Riedinger, R. and Machielse, B. and Knall, E. N. and Bhaskar, M. K. and Knaut, C. M. and Bekenstein, R. and Park, H. and Lončar, M. and Lukin, M. D.},
month = may,
year = {2022},
pages = {213602},
}
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