An out-of-equilibrium non-Markovian quantum heat engine
An out-of-equilibrium non-Markovian quantum heat engine
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DOI：
10.1088/2058-9565/aaf5b4
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发表时间：
2019-04-01
影响因子：
6.7
通讯作者：
Omar, Yasser
中科院分区：
文献类型：
--
作者：
Pezzutto, Marco;Paternostro, Mauro;Omar, Yasser
我们研究了使用谐波工作介质并与有限尺寸储层进行碰撞动力学的量子奥托循环的性能。我们将工作冲程的动态范围从强非绝热条件扩展到准静态条件，并解决工作介质的开放系统动力学的非马尔可夫性对热机效率的影响。虽然这种效率从未超过有限时间随机引擎的经典上限，但引擎的行为显示出由演化时间的有限性和系统环境演化的记忆承载特征引起的明显影响。
We study the performance of a quantum Otto cycle using a harmonic work medium and undergoing collisional dynamics with finite-size reservoirs. We span the dynamical regimes of the work strokes from strongly non-adiabatic to quasi-static conditions, and address the effects that non-Markovianity of the open-system dynamics of the work medium can have on the efficiency of the thermal machine. While such efficiency never surpasses the classical upper bound valid for finite-time stochastic engines, the behaviour of the engine shows clear-cut effects induced by both the finiteness of the evolution time, and the memory-bearing character of the system-environment evolution.