Dissipation-induced collective advantage of a quantum thermal machine
arXiv:2310.01938 · doi:10.1116/5.0190340
Abstract
Do quantum correlations lead to better performance with respect to several different systems working independently? For quantum thermal machines, the question is whether a working medium (WM) made of constituents exhibits better performance than independent engines working in parallel. Here, by inspecting a microscopic model with the WM composed by two non-interacting quantum harmonic oscillators, we show that the presence of a common environment can mediate non-trivial correlations in the WM leading to better quantum heat engine performance -- maximum power and efficiency -- with respect to an independent configuration. Furthermore, this advantage is striking for strong dissipation, a regime in which two independent engines cannot deliver any useful power. Our results show that dissipation can be exploited as a useful resource for quantum thermal engines, and are corroborated by optimization techniques here extended to non-Markovian quantum heat engines.
Accepted Manuscript: Main text (13 pages, 8 figures) + Supplementary Material (9 pages, 3 figures). This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in AVS Quantum Science 6, 025001 (2024) and may be found at https://doi.org/10.1116/5.0190340
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