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arXiv · 2205.01650

Dynamical heat engines with non--Markovian reservoirs

Fabio Cavaliere·Matteo Carrega·Giulio De Filippis·Vittorio Cataudella·Giuliano Benenti·Maura Sassetti
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Abstract

We discuss whether, and under which conditions, it is possible to realize a heat engine simply by dynamically modulating the couplings between the quantum working medium and thermal reservoirs. For that purpose, we consider the paradigmatic model of a quantum harmonic oscillator, exposed to a minimal modulation, that is, a monochromatic driving of the coupling to only one of the thermal baths. We demonstrate, at any order in the system/bath coupling strength, that in this setup non--Markovianity of the bath is a necessary condition to obtain a heat engine. In addition, we identify suitable structured environments for the engine to approach the ideal Carnot efficiency. Our results open up new possibilities for the use of non--Markovian open quantum systems for the construction and optimization of quantum thermal machines.

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Fabio Cavaliere, Matteo Carrega, Giulio De Filippis, Vittorio Cataudella, Giuliano Benenti, Maura Sassetti. 2022-05-03. Dynamical heat engines with non--Markovian reservoirs. https://doi.org/10.1103/physrevresearch.4.033233

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