论文标题
两体量子吸收冰箱具有光学机电样相互作用
Two-body quantum absorption refrigerators with optomechanical-like interactions
论文作者
论文摘要
量子吸收冰箱（QAR）自主从冷浴中自主提取热量，并通过利用较高温度储层的输入热来将热量倾倒到热水浴中。 QAR通常需要三体相互作用。我们提出并检查了一个两体QAR模型，该模型基于由两个两级系统或两个谐波振荡器或一个两级原子和一个谐波振荡器组成的工作介质中的光力样耦合。在没有内部耗散的理想情况下，在实验可实现的参数中，我们的模型可以达到任意接近Carnot结合的性能系数。我们研究了最大功率的效率，这是用于实际目的的界限，并表明，通过使用合适的储层工程并利用非线性光机电状的耦合，人们可以在接近Carnot界限的最大功率下实现效率，尽管功率逐渐逐渐接近Carnot接近Carnot Bount。此外，我们讨论了非古典相关性和希尔伯特空间大小对冷却能力的影响。最后，我们考虑了模型的更现实的版本，在该版本中，我们认为热泄漏使QAR非理想并阻止其达到Carnot效率。
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 optomechanial-like coupling, one can achieve efficiency at maximum power close to the Carnot bound, though the power gradually approaches to zero as the efficiency approaches the Carnot bound. Moreover, we discuss the impact of non-classical correlations and the size of Hilbert space on the cooling power. Finally, we consider a more realistic version of our model in which we consider heat leaks that makes QAR non-ideal and prevent it to achieve the Carnot efficiency.
