Optimal performance of a quantum Otto refrigerator

Optimal performance of a quantum Otto refrigerator
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DOI：
10.1209/0295-5075/113/60002
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发表时间：
2016-03-01
期刊：
EPL
影响因子：
1.8
通讯作者：
Lutz, Eric
Lutz, Eric
中科院分区：
物理与天体物理4区
文献类型：
--
作者：
Abah, Obinna;Lutz, Eric

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考虑含时谐振子的量子奥托制冷循环。我们研究了绝热和非绝热频率调制在最大优值时的性能系数。我们得到的最佳性能在高温（经典）制度和低温（量子）限制的解析表达式。此外，我们分析了故障的冷却循环强非绝热驱动协议，并推导出分析估计的最小驱动时间允许冷却。版权所有（C）2016 EPLA
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