Optimal performance of a quantum Otto refrigerator

被引：69
作者：
Abah, Obinna [1 ]
Lutz, Eric [1 ]
机构：
[1] Univ Erlangen Nurnberg, Dept Phys, D-91058 Erlangen, Germany
来源：
EPL | 2016年 / 113卷 / 06期
关键词：
OPEN SYSTEM; THERMODYNAMICS; EFFICIENCY; MODEL;
D O I：
10.1209/0295-5075/113/60002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We consider a quantum Otto refrigerator cycle of a time-dependent harmonic oscillator. We investigate the coefficient of performance at maximum figure of merit for adiabatic and nonadiabatic frequency modulations. We obtain analytical expressions for the optimal performance both in the high-temperature (classical) regime and in the low-temperature (quantum) limit. We moreover analyze the breakdown of the cooling cycle for strongly nonadiabatic driving protocols and derive analytical estimates for the minimal driving time allowed for cooling. Copyright (C) EPLA, 2016
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页数：6
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