Two-level quantum Otto heat engine operating with unit efficiency far from the quasi-static regime under a squeezed reservoir

• URL: http://arxiv.org/abs/2003.12664v2
• Date: Tue, 28 Jul 2020 13:03:57 GMT
• Title: Two-level quantum Otto heat engine operating with unit efficiency far from the quasi-static regime under a squeezed reservoir
• Authors: Rog\'erio J. de Assis, J. S. Sales, Udson C. Mendes, and Norton G. de Almeida
• Abstract summary: We propose a two-level model as the working substance to perform a quantum Otto heat engine surrounded by a cold thermal reservoir and a squeezed hot thermal reservoir. Taking advantage of this model we show a striking achievement, that is to attain unity efficiency even at non null power.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent theoretical and experimental studies in quantum heat engines show that, in the quasi-static regime, it is possible to have higher efficiency than the limit imposed by Carnot, provided that engineered reservoirs are used. The quasi-static regime, however, is a strong limitation to the operation of heat engines, since infinitely long time is required to complete a cycle. In this paper we propose a two-level model as the working substance to perform a quantum Otto heat engine surrounded by a cold thermal reservoir and a squeezed hot thermal reservoir. Taking advantage of this model we show a striking achievement, that is to attain unity efficiency even at non null power.

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