Dephasing and dissipation in qubit thermodynamics

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Dephasing and dissipation in qubit thermodynamics. / Pekola, J. P.; Masuyama, Y.; Nakamura, Y.; Bergli, J.; Galperin, Y.M.

In: Physical Review E, Vol. 91, No. 6, 062109, 08.06.2015, p. 1-8.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Pekola, JP, Masuyama, Y, Nakamura, Y, Bergli, J & Galperin, YM 2015, 'Dephasing and dissipation in qubit thermodynamics', Physical Review E, vol. 91, no. 6, 062109, pp. 1-8. https://doi.org/10.1103/PhysRevE.91.062109

APA

Pekola, J. P., Masuyama, Y., Nakamura, Y., Bergli, J., & Galperin, Y. M. (2015). Dephasing and dissipation in qubit thermodynamics. Physical Review E, 91(6), 1-8. [062109]. https://doi.org/10.1103/PhysRevE.91.062109

Vancouver

Pekola JP, Masuyama Y, Nakamura Y, Bergli J, Galperin YM. Dephasing and dissipation in qubit thermodynamics. Physical Review E. 2015 Jun 8;91(6):1-8. 062109. https://doi.org/10.1103/PhysRevE.91.062109

Author

Pekola, J. P. ; Masuyama, Y. ; Nakamura, Y. ; Bergli, J. ; Galperin, Y.M. / Dephasing and dissipation in qubit thermodynamics. In: Physical Review E. 2015 ; Vol. 91, No. 6. pp. 1-8.

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@article{1c7d98aea7b344f0b95e6a013dbb59fc,
title = "Dephasing and dissipation in qubit thermodynamics",
abstract = "We analyze the stochastic evolution and dephasing of a qubit within the quantum jump approach. It allows one to treat individual realizations of inelastic processes, and in this way it provides solutions, for instance, to problems in quantum thermodynamics and distributions in statistical mechanics. We demonstrate that dephasing and relaxation of the qubit render the Jarzynski and Crooks fluctuation relations (FRs) of nonequilibrium thermodynamics intact. On the contrary, the standard two-measurement protocol, taking into account only the fluctuations of the internal energy U, leads to deviations in FRs under the same conditions. We relate the average ⟨e−βU⟩ (where β is the inverse temperature) with the qubit's relaxation and dephasing rates in the weak dissipation limit and discuss this relationship for different mechanisms of decoherence.",
author = "Pekola, {J. P.} and Y. Masuyama and Y. Nakamura and J. Bergli and Y.M. Galperin",
note = "VK: Low Temperature Laboratory",
year = "2015",
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day = "8",
doi = "10.1103/PhysRevE.91.062109",
language = "English",
volume = "91",
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journal = "Physical Review E",
issn = "2470-0045",
publisher = "American Physical Society",
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RIS - Download

TY - JOUR

T1 - Dephasing and dissipation in qubit thermodynamics

AU - Pekola, J. P.

AU - Masuyama, Y.

AU - Nakamura, Y.

AU - Bergli, J.

AU - Galperin, Y.M.

N1 - VK: Low Temperature Laboratory

PY - 2015/6/8

Y1 - 2015/6/8

N2 - We analyze the stochastic evolution and dephasing of a qubit within the quantum jump approach. It allows one to treat individual realizations of inelastic processes, and in this way it provides solutions, for instance, to problems in quantum thermodynamics and distributions in statistical mechanics. We demonstrate that dephasing and relaxation of the qubit render the Jarzynski and Crooks fluctuation relations (FRs) of nonequilibrium thermodynamics intact. On the contrary, the standard two-measurement protocol, taking into account only the fluctuations of the internal energy U, leads to deviations in FRs under the same conditions. We relate the average ⟨e−βU⟩ (where β is the inverse temperature) with the qubit's relaxation and dephasing rates in the weak dissipation limit and discuss this relationship for different mechanisms of decoherence.

AB - We analyze the stochastic evolution and dephasing of a qubit within the quantum jump approach. It allows one to treat individual realizations of inelastic processes, and in this way it provides solutions, for instance, to problems in quantum thermodynamics and distributions in statistical mechanics. We demonstrate that dephasing and relaxation of the qubit render the Jarzynski and Crooks fluctuation relations (FRs) of nonequilibrium thermodynamics intact. On the contrary, the standard two-measurement protocol, taking into account only the fluctuations of the internal energy U, leads to deviations in FRs under the same conditions. We relate the average ⟨e−βU⟩ (where β is the inverse temperature) with the qubit's relaxation and dephasing rates in the weak dissipation limit and discuss this relationship for different mechanisms of decoherence.

UR - http://dx.doi.org/10.1103/PhysRevE.91.062109

U2 - 10.1103/PhysRevE.91.062109

DO - 10.1103/PhysRevE.91.062109

M3 - Article

VL - 91

SP - 1

EP - 8

JO - Physical Review E

JF - Physical Review E

SN - 2470-0045

IS - 6

M1 - 062109

ER -

ID: 2003738