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

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Kay Brandner
  • Michael Bauer
  • Udo Seifert

Organisaatiot

  • University of Stuttgart

Kuvaus

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.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli170602
Sivut1-7
JulkaisuPhysical Review Letters
Vuosikerta119
Numero17
TilaJulkaistu - 25 lokakuuta 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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