Occurrence of discontinuities in the performance of finite-time quantum Otto cycles

被引：38

作者：

Zheng, Yuanjian ^{[1
,2
]}

Haenggi, Peter ^{[3
,4
,5
]}

Poletti, Dario ^{[1
,6
]}

机构：

[1] Singapore Univ Technol & Design, Engn Prod Dev Pillar, 8 Somapah Rd, Singapore 487372, Singapore

[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore

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

[4] Nanosyst Initiat Munich, Schellingstr 4, D-80799 Munich, Germany

[5] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[6] CNRS UNS NUS NTU Int Joint Res Unit, UMI 3654, MajuLab, Singapore, Singapore

来源：

PHYSICAL REVIEW E | 2016年 / 94卷 / 01期

关键词：

JARZYNSKI EQUALITY; HEAT ENGINES; THERMODYNAMICS; SYSTEMS; SHORTCUTS; MODEL;

D O I：

10.1103/PhysRevE.94.012137

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：

We study a quantum Otto cycle in which the strokes are performed in finite time. The cycle involves energy measurements at the end of each stroke to allow for the respective determination of work. We then optimize for the work and efficiency of the cycle by varying the time spent in the different strokes and find that the optimal value of the ratio of time spent on each stroke goes through sudden changes as the parameters of this cycle vary continuously. The position of these discontinuities depends on the optimized quantity under consideration such as the net work output or the efficiency.

引用

页数：8

共 74 条

[1] Single-Ion Heat Engine at Maximum Power [J].