论文标题
带挤压热储层的量子stirling加热发动机
Quantum Stirling heat engine with squeezed thermal reservoir
论文作者
论文摘要
我们使用两个级别的系统和谐波振荡器作为工作介质分析了量子stirling热发动机（QSHE）的性能，该介质与挤压的热储层和冷储液接触。首先，我们得出了生产的工作和效率的封闭式表达式，这在很大程度上取决于挤压参数$ r_h $。然后，我们证明挤压的效果将工作介质加热到更高的有效温度，从而提高整体性能。特别是，当热和冷储层的温度较小时，效率随挤压的程度超过了标准的Carnot限制的程度。此外，我们得出了最大工作效率的分析表达式以及在高温和低温方向上产生的最大工作，并且我们发现在极端温度下，压缩参数$ r_h $不会影响QSHE的性能。最后，QSHE的性能取决于工作介质的性质。
We analyze the performance of a quantum Stirling heat engine (QSHE), using a two level system and the harmonic oscillator as the working medium, that contacts with a squeezed thermal reservoir and a cold reservoir. First, we derive closed-form expressions for the produced work and efficiency which strongly depends on the squeezing parameter $r_h$. Then, we prove that the effect of squeezing heats the working medium to a higher effective temperature which leads to better overall performance. In particular, the efficiency increases with the degree of squeezing surpassing the standard Carnot limit, when the ratio of temperatures of hot and cold reservoir is small. Furthermore, we derive the analytical expressions for the efficiency at maximum work and the maximum produced work in the high and low temperature regime and we find that at extreme temperatures the squeezing parameter $r_h$ does not affect the performance of the QSHE. Finally, the performance of the QSHE depends on the nature of the working medium.
