论文标题
关于初始连贯性在自旋相位熵产生速率中的作用
On the role of initial coherence in the spin phase-space entropy production rate
论文作者
论文摘要
最近的研究指出，热力学相关性值得值的数字（例如工作，热量和熵产生）的内在依赖性对系统可用的量子相干量。但是，尚未确定相干是阻碍或增强这种热力学性能量化器所获得的价值。我们表明，在考虑通过局部非单身通道使有限大小的两分量量子系统中产生的熵产生时，在系统状态下熵产生与量子相干性的程度之间不存在一般的单调关系。当考虑适用于适当选择的初始状态的特定形式的开放系统动力学时，可以检索这种数量之间的直接对应关系。我们的结果要求系统地研究真正的量子特征在量子过程的非平衡热力学中的作用。
Recent studies have pointed out the intrinsic dependence of figures of merit of thermodynamic relevance -- such as work, heat and entropy production -- on the amount of quantum coherences that is made available to a system. However, whether coherences hinder or enhance the value taken by such quantifiers of thermodynamic performance is yet to be ascertained. We show that, when considering entropy production generated in a process taking a finite-size bipartite quantum system out of equilibrium through local non-unitary channels, no general monotonicity relationship exists between the entropy production and degree of quantum coherence in the state of the system. A direct correspondence between such quantities can be retrieved when considering specific forms of open-system dynamics applied to suitably chosen initial states. Our results call for a systematic study of the role of genuine quantum features in the non-equilibrium thermodynamics of quantum processes.
