arXiv:2303.15773 · The European Physical Journal Special Topics

Efficiency and thermodynamic uncertainty relations of a dynamical quantum heat engine

Luca Razzoli, Fabio Cavaliere, Matteo Carrega, Maura Sassetti, Giuliano Benenti

Published Aug 7, 2023• 7 citations

Abstract

Abstract In the quest for high-performance quantum thermal machines, looking for an optimal thermodynamic efficiency is only part of the issue. Indeed, at the level of quantum devices, fluctuations become extremely relevant and need to be taken into account. In this paper we study the thermodynamic uncertainty relations for a quantum thermal machine with a quantum harmonic oscillator as a working medium, connected to two thermal baths, one of which is dynamically coupled. We show that parameters can be found such that the machine operates both as a quantum engine or refrigerator, with both sizeable efficiency and small fluctuations.

DOI: 10.1140/epjs/s11734-023-00949-8

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