Extractable work, the role of correlations, and asymptotic freedom in quantum batteries
Quantum Physics
2019-02-05 v3 Mesoscale and Nanoscale Physics
Abstract
We investigate a quantum battery made of N two-level systems, which is charged by an optical mode via an energy-conserving interaction. We quantify the fraction E(N) of energy stored in the B battery that can be extracted in order to perform thermodynamic work. We first demonstrate that E(N) is highly reduced by the presence of correlations between the charger and the battery or B between the two-level systems composing the battery. We then show that the correlation-induced suppression of extractable energy, however, can be mitigated by preparing the charger in a coherent optical state. We conclude by proving that the charger-battery system is asymptotically free of such locking correlations in the N \to \infty limit.
Keywords
Cite
@article{arxiv.1807.08656,
title = {Extractable work, the role of correlations, and asymptotic freedom in quantum batteries},
author = {Gian Marcello Andolina and Maximilian Keck and Andrea Mari and Michele Campisi and Vittorio Giovannetti and Marco Polini},
journal= {arXiv preprint arXiv:1807.08656},
year = {2019}
}
Comments
5+4 pages