Universal Coherence-Induced Power Losses of Quantum Heat Engines in Linear Response

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Universal Coherence-Induced Power Losses of Quantum Heat Engines in Linear Response. / Brandner, Kay; Bauer, Michael; Seifert, Udo.

julkaisussa: Physical Review Letters, Vuosikerta 119, Nro 17, 170602, 25.10.2017, s. 1-7.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Brandner, Kay ; Bauer, Michael ; Seifert, Udo. / Universal Coherence-Induced Power Losses of Quantum Heat Engines in Linear Response. Julkaisussa: Physical Review Letters. 2017 ; Vuosikerta 119, Nro 17. Sivut 1-7.

Bibtex - Lataa

@article{1d875f08fe304f3cb0c2f064fff658fa,
title = "Universal Coherence-Induced Power Losses of Quantum Heat Engines in Linear Response",
abstract = "We identify a universal indicator for the impact of coherence on periodically driven quantum devices by dividing their power output into a classical contribution and one stemming solely from superpositions. Specializing to Lindblad dynamics and small driving amplitudes, we derive general upper bounds on both the coherent and the total power of cyclic heat engines. These constraints imply that, for sufficiently slow driving, coherence inevitably leads to power losses in the linear-response regime. We illustrate our theory by working out the experimentally relevant example of a single-qubit engine.",
author = "Kay Brandner and Michael Bauer and Udo Seifert",
year = "2017",
month = "10",
day = "25",
doi = "10.1103/PhysRevLett.119.170602",
language = "English",
volume = "119",
pages = "1--7",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "17",

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RIS - Lataa

TY - JOUR

T1 - Universal Coherence-Induced Power Losses of Quantum Heat Engines in Linear Response

AU - Brandner, Kay

AU - Bauer, Michael

AU - Seifert, Udo

PY - 2017/10/25

Y1 - 2017/10/25

N2 - We identify a universal indicator for the impact of coherence on periodically driven quantum devices by dividing their power output into a classical contribution and one stemming solely from superpositions. Specializing to Lindblad dynamics and small driving amplitudes, we derive general upper bounds on both the coherent and the total power of cyclic heat engines. These constraints imply that, for sufficiently slow driving, coherence inevitably leads to power losses in the linear-response regime. We illustrate our theory by working out the experimentally relevant example of a single-qubit engine.

AB - We identify a universal indicator for the impact of coherence on periodically driven quantum devices by dividing their power output into a classical contribution and one stemming solely from superpositions. Specializing to Lindblad dynamics and small driving amplitudes, we derive general upper bounds on both the coherent and the total power of cyclic heat engines. These constraints imply that, for sufficiently slow driving, coherence inevitably leads to power losses in the linear-response regime. We illustrate our theory by working out the experimentally relevant example of a single-qubit engine.

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U2 - 10.1103/PhysRevLett.119.170602

DO - 10.1103/PhysRevLett.119.170602

M3 - Article

VL - 119

SP - 1

EP - 7

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 17

M1 - 170602

ER -

ID: 16044540