Thermodynamics and Fluctuations in Quantum Heat Engines under Reservoir Squeezing
Abstract
We investigate the thermodynamics and fluctuations of a finite-time quantum Otto engine alternatively driven by a hot squeezed and a cold thermal reservoir. We show that reservoir squeezing significantly enhances the performance by increasing the thermodynamic efficiency and the power, and enables higher stability by decreasing the relative power fluctuations and speeding up the convergence of quantum efficiency to its most probable value. These results are explained by our theoretical analysis that incorporates the effect of reservoir squeezing on the irreversibility associated with quantum friction and coherence due to finite time. An experimental scheme for realizing this quantum heat engine is proposed using a single-electron spin pertaining to a trapped 40Ca ion. We provide a general framework for reliably studying the finite-time quantum heat engine and derive important insights into the novel thermodynamic behaviors beyond the classical thermal machines.
Keywords
Cite
@article{arxiv.2209.05885,
title = {Thermodynamics and Fluctuations in Quantum Heat Engines under Reservoir Squeezing},
author = {Yang Xiao and Dehua Liu and Jizhou He and Wu-Ming Liu and L. -L. Yan and Jianhui Wang},
journal= {arXiv preprint arXiv:2209.05885},
year = {2023}
}
Comments
arXiv admin note: substantial text overlap with arXiv:2205.13290