Quantum Performance of Thermal Machines over Many Cycles

被引：91

作者：

Watanabe, Gentaro ^{[1
,2
,3
,4
]}

Venkatesh, B. Prasanna ^{[5
,6
]}

Talkner, Peter ^{[7
,8
]}

del Campo, Adolfo ^{[9
]}

机构：

[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Zhejiang, Peoples R China

[3] Inst for Basic Sci Korea, Ctr Theoret Phys Complex Syst, Daejeon 34051, South Korea

[4] Univ Sci & Technol, 217 Gajeong Ro, Daejeon 34113, South Korea

[5] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, Technikerstr 21a, A-6020 Innsbruck, Austria

[6] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

[7] Univ Augsburg, Inst Phys, Univ Str 1, D-86135 Augsburg, Germany

[8] Univ Silesia, Inst Phys, PL-40007 Katowice, Poland

[9] Univ Massachusetts, Dept Phys, Boston, MA 02125 USA

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 05期

关键词：

HEAT ENGINE; OPEN SYSTEM; COHERENCE; MODEL; WORK;

D O I：

10.1103/PhysRevLett.118.050601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The performance of quantum heat engines is generally based on the analysis of a single cycle. We challenge this approach by showing that the total work performed by a quantum engine need not be proportional to the number of cycles. Furthermore, optimizing the engine over multiple cycles leads to the identification of scenarios with a quantum enhancement. We demonstrate our findings with a quantum Otto engine based on a two-level system as the working substance that supplies power to an external oscillator.

引用

页数：5

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