Quantum absorption refrigerator (QAR) autonomously extracts heat from a cold bath and dumps into a hot bath by exploiting the input heat from a higher temperature reservoir. QARs typically require three-body interactions. We propose and examine a two-body QAR model based upon optomechanical-like coupling in the working medium composed of either two two-level systems or two harmonic oscillators or one two-level atom and a harmonic oscillator. In the ideal case without internal dissipation, within the experimentally realizable parameters, our model can attain the coefficient of performance that is arbitrarily close to the Carnot bound. We study the efficiency at maximum power, a bound for practical purposes, and show that by using suitable reservoir engineering and exploiting the nonlinear optomechanical-like coupling, one can achieve efficiency at maximum power close to the Carnot bound, though the power gradually approaches zero as the efficiency approaches the Carnot bound. Mor...

中文翻译：

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具有光机械作用的两体量子吸收制冷机

量子吸收式制冷机（QAR）通过利用来自较高温度存储器的输入热量自动从冷浴中提取热量并将其倾倒到热水浴中。QAR通常需要三体交互。我们提出并研究了基于工作介质中光机样耦合的两体QAR模型，该介质由两个两个二级系统或两个谐波振荡器或一个两个二级原子和一个谐波振荡器组成。在没有内部耗散的理想情况下，在实验上可实现的参数范围内，我们的模型可以获得任意接近卡诺边界的性能系数。我们研究了最大功率下的效率（为实际目的而定），并表明通过使用适当的油藏工程并利用非线性光机样耦合，尽管在效率接近卡诺边界时功率逐渐接近零，但人们可以在接近卡诺边界的最大功率下获得效率。莫...