Exchange fluctuation theorems for strongly interacting quantum pumps
Exchange fluctuation theorems for strongly interacting quantum pumps
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DOI：
10.1116/5.0152186
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发表时间：
2022-09
期刊：
影响因子：
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通讯作者：
A. Sone;D. Soares-Pinto;Sebastian Deffner
中科院分区：
文献类型：
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作者：
A. Sone;D. Soares-Pinto;Sebastian Deffner
考虑到量子测量的反作用对量子系统von-Neumann熵增加的信息贡献，我们导出了具有任意耦合强度的多体系统的一般量子交换涨落定理.由此产生的热力学第二定律比传统的克劳修斯不等式更严格。导出的界限是条件热态的量子互信息，条件热态是以初始能量测量为条件的热态。这些结果阐明了量子关联在多个子系统之间的热交换中的作用。
We derive a general quantum exchange fluctuation theorem for multipartite systems with arbitrary coupling strengths by taking into account the informational contribution of the back-action of the quantum measurements, which contributes to the increase in the von-Neumann entropy of the quantum system. The resulting second law of thermodynamics is tighter than the conventional Clausius inequality. The derived bound is the quantum mutual information of the conditional thermal state, which is a thermal state conditioned on the initial energy measurement. These results elucidate the role of quantum correlations in the heat exchange between multiple subsystems.