Dissipation-induced collective advantage of a quantum thermal machine
- URL: http://arxiv.org/abs/2310.01938v2
- Date: Thu, 25 Apr 2024 18:00:08 GMT
- Title: Dissipation-induced collective advantage of a quantum thermal machine
- Authors: Matteo Carrega, Luca Razzoli, Paolo Andrea Erdman, Fabio Cavaliere, Giuliano Benenti, Maura Sassetti,
- Abstract summary: A working medium (WM) made of $N$ constituents exhibits better performance than $N$ independent engines working in parallel.
We show that the presence of a common environment can mediate non-trivial correlations in the WM leading to better quantum heat engine performance.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- 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 $N$ constituents exhibits better performance than $N$ 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.
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