We derive the general probability distribution function of stochastic work for quantum Otto engines in which both the isochoric and driving processes are irreversible due to finite time duration. The time-dependent power fluctuations, average power, and thermodynamic efficiency are explicitly obtained for a complete cycle operating with an analytically solvable two-level system. We show that, there is a trade-off between efficiency (or power) and power fluctuations.
@article{arxiv.2012.10621,
title = {Power Fluctuations of An Irreversible Quantum Otto Engine},
author = {Guangqian Jiao and Shoubao Zhu and Jizhou He and Yongli Ma and Jianhui Wang},
journal= {arXiv preprint arXiv:2012.10621},
year = {2021}
}