论文标题
不可逆的熵生产速率在参数驱动的差异系统中：非公开可观察到的自我相关的作用
Irreversible Entropy Production rate in a parametrically driven-dissipative System: The Role of Self-Correlation between Noncommuting Observables
论文作者
论文摘要
在本文中，我们探讨了在两模式高斯系统的固定状态下Wigner熵生产速率的出现。相互作用的模式将耗散成不同的本地热浴。同样，由于参数放大过程，骨气模式之一会演变为挤压热状态。使用Heisenberg-Langevin方法，结合量子相空间配方，我们获得了稳态Wigner熵产生速率的分析表达。它包含两个关键术语。第一个是类似onsager的表达式，描述了系统内的热流。第二个任期是由于浴缸的真空波动而产生的。分析表明，参数放大模式的四倍体之间的自相关将模式推向热挤压状态。它增加了总系统的真空熵产生，并减少了模式之间的热量电流。结果表明，与以前的其他提案不同，挤压可以通过不可逆的流量来限制实际非平衡热发动机的效率。
In this paper, we explore the emergence of the Wigner entropy production rate in the stationary state of a two-mode Gaussian system. The interacting modes dissipate into different local thermal baths. Also, one of the bosonic modes evolves into the squeezed-thermal state because of the parametric amplification process. Using the Heisenberg-Langevin approach, combined with quantum phase space formulation, we get an analytical expression for the steady-state Wigner entropy production rate. It contains two key terms. The first one is an Onsager-like expression that describes heat flow within the system. The second term resulted from vacuum fluctuations of the baths. Analyses show that self-correlation between the quadratures of the parametrically amplified mode pushes the mode towards the thermal squeezed state. It increases vacuum entropy production of the total system and reduces the heat current between the modes. The results imply that, unlike other previous proposals, squeezing can constrain the efficiency of actual non-equilibrium heat engines by irreversible flows.
