Room-Temperature Quantum Coherence and Rabi Oscillations in Vanadyl Phthalocyanine: Toward Multifunctional Molecular Spin Qubits. Atzori, M., Tesi, L., Morra, E., Chiesa, M., Sorace, L., & Sessoli, R. Journal of the American Chemical Society, 138(7):2154–2157, February, 2016. ![Room-Temperature Quantum Coherence and Rabi Oscillations in Vanadyl Phthalocyanine: Toward Multifunctional Molecular Spin Qubits [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Here we report the investigation of the magnetic relaxation and the quantum coherence of vanadyl phthalocyanine, VOPc, a multifunctional and easyprocessable potential molecular spin qubit. VOPc in its pure form (1) and its crystalline dispersions in the isostructural diamagnetic host TiOPc in different stoichiometric ratios, namely VOPc:TiOPc 1:10 (2) and 1:1000 (3), were investigated via a multitechnique approach based on the combination of alternate current (AC) susceptometry, continuous wave, and pulsed electron paramagnetic resonance (EPR) spectroscopy. AC susceptibility measurements revealed a linear increase of the relaxation rate with temperature up to 20 K, as expected for a direct mechanism, but τ remains slow over a very wide range of applied static field values (up to ∼5 T). Pulsed EPR spectroscopy experiments on 3 revealed quantum coherence up to room temperature with Tm ∼1 μs at 300 K, representing the highest value obtained to date for molecular electronic spin qubits. Rabi oscillations are observed in this nuclear spin-active environment (1H and 14N nuclei) at room temperature also for 2, indicating an outstanding robustness of the quantum coherence in this molecular semiconductor exploitable in spintronic devices.
@article{atzori_room-temperature_2016,
title = {Room-{Temperature} {Quantum} {Coherence} and {Rabi} {Oscillations} in {Vanadyl} {Phthalocyanine}: {Toward} {Multifunctional} {Molecular} {Spin} {Qubits}},
volume = {138},
issn = {0002-7863, 1520-5126},
shorttitle = {Room-{Temperature} {Quantum} {Coherence} and {Rabi} {Oscillations} in {Vanadyl} {Phthalocyanine}},
url = {https://pubs.acs.org/doi/10.1021/jacs.5b13408},
doi = {10.1021/jacs.5b13408},
abstract = {Here we report the investigation of the magnetic relaxation and the quantum coherence of vanadyl phthalocyanine, VOPc, a multifunctional and easyprocessable potential molecular spin qubit. VOPc in its pure form (1) and its crystalline dispersions in the isostructural diamagnetic host TiOPc in different stoichiometric ratios, namely VOPc:TiOPc 1:10 (2) and 1:1000 (3), were investigated via a multitechnique approach based on the combination of alternate current (AC) susceptometry, continuous wave, and pulsed electron paramagnetic resonance (EPR) spectroscopy. AC susceptibility measurements revealed a linear increase of the relaxation rate with temperature up to 20 K, as expected for a direct mechanism, but τ remains slow over a very wide range of applied static field values (up to ∼5 T). Pulsed EPR spectroscopy experiments on 3 revealed quantum coherence up to room temperature with Tm ∼1 μs at 300 K, representing the highest value obtained to date for molecular electronic spin qubits. Rabi oscillations are observed in this nuclear spin-active environment (1H and 14N nuclei) at room temperature also for 2, indicating an outstanding robustness of the quantum coherence in this molecular semiconductor exploitable in spintronic devices.},
language = {en},
number = {7},
urldate = {2020-08-12},
journal = {Journal of the American Chemical Society},
author = {Atzori, Matteo and Tesi, Lorenzo and Morra, Elena and Chiesa, Mario and Sorace, Lorenzo and Sessoli, Roberta},
month = feb,
year = {2016},
pages = {2154--2157},
}
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