Role of the superposition principle for enhancing the efficiency of the quantum-mechanical Carnot engine

被引：23

作者：

Abe, Sumiyoshi ^{[1
,2
]}

Okuyama, Shinji ^{[1
]}

机构：

[1] Mie Univ, Dept Engn Phys, Tsu, Mie 5148507, Japan

[2] Inst Super Mat & Mecan Avances, F-72000 Le Mans, France

来源：

PHYSICAL REVIEW E | 2012年 / 85卷 / 01期

基金：

日本学术振兴会;

关键词：

D O I：

10.1103/PhysRevE.85.011104

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The role of the superposition principle is discussed for the quantum-mechanical Carnot engine introduced by Bender, Brody, and Meister [J. Phys. A 33, 4427 (2000)]. It is shown that the efficiency of the engine can be enhanced by the superposition of quantum states. A finite-time process is also discussed and the condition of the maximum power output is presented. Interestingly, the efficiency at the maximum power is lower than that without superposition.

引用

页数：4

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