论文标题
高斯量子图的非线性onsager关系
Non-linear Onsager relations for Gaussian quantum maps
论文作者
论文摘要
Onsager的关系使人们可以根据基础相关电流来表达热力学的第二定律。但是，这些关系通常仅接近平衡。使用第二定律的量子相空间公式，我们表明开放式玻色旋转高斯系统也遵守一组远离平衡的范围。然而，发现这些关系是由更复杂的非线性函数给出的，该功能将其降低到接近平衡的通常二次形式。这种非线性性意味着远离均衡，存在着从系统到浴室与反之亦然之间的熵流之间的基本不对称性。还讨论了在驱动量子量子光学设置中应用的后果。
Onsager's relations allow one to express the second law of thermodynamics in terms of the underlying associated currents. These relations, however, are usually valid only close to equilibrium. Using a quantum phase space formulation of the second law, we show that open bosonic Gaussian systems also obey a set of Onsager relations, valid arbitrarily far from equilibrium. These relations, however, are found to be given by a more complex non-linear function, which reduces to the usual quadratic form close to equilibrium. This non-linearity implies that far from equilibrium, there exists a fundamental asymmetry between entropy flow from system to bath and vice-versa. The ramifications of this for applications in driven-dissipative quantum optical setups are also discussed.
