Dynamical heat engines with non--Markovian reservoirs

• URL: http://arxiv.org/abs/2205.01650v2
• Date: Wed, 5 Oct 2022 08:27:01 GMT
• Title: Dynamical heat engines with non--Markovian reservoirs
• Authors: Fabio Cavaliere, Matteo Carrega, Giulio De Filippis, Vittorio Cataudella, Giuliano Benenti, Maura Sassetti
• Abstract summary: We discuss whether it is possible to realize a heat engine simply by dynamically modulating the couplings between the quantum working medium and thermal reservoirs. 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.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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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