论文标题

在挤压储层下,具有单位效率的两级量子奥托热发动机远离准静态状态

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

论文作者

de Assis, Rogério J., Sales, J. S., Mendes, Udson C., de Almeida, Norton G.

论文摘要

量子热发动机的最新理论和实验研究表明,在准静态状态下,只要使用工程的储层,就可以具有比Carnot施加的极限更高的效率。但是,准静态状态是对加热发动机操作的强烈限制,因为完成一个周期需要无限的时间。在本文中,我们提出了一个两级模型作为工作物质,以执行量子奥托热发动机,该量子被冷热储层和挤压热储层包围。利用这一模型,我们显示出惊人的成就,即即使在无效的功率下也能达到统一效率。

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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