论文标题
上限用于熵通量产生的量子熵产生
Upper bound for quantum entropy production from entropy flux
论文作者
论文摘要
熵产生是表征非平衡系统的关键数量。但是，在实践中通常很难计算，因为它需要有关系统及其经历的动态的详细信息。这在量子域中变得更加困难，如果人们对通用的非平衡储层感兴趣，则不再适用标准的热食谱。在本文中，我们根据熵通量的熵产生的上限为一类系统的熵通量而言，以该系统为其可观察到的系统提供了通量。由于在此类系统中通常可以轻松访问电流，因此该界限应被证明可用于估算各种过程中的熵产生。我们通过考虑三级的Maser发动机和与挤压浴室相互作用的系统来说明界限的适用性。
Entropy production is a key quantity characterizing nonequilibrium systems. However, it can often be difficult to compute in practice, as it requires detailed information about the system and the dynamics it undergoes. This becomes even more difficult in the quantum domain, and if one is interested in generic nonequilibrium reservoirs, for which the standard thermal recipes no longer apply. In this paper, we derive an upper bound for the entropy production in terms of the entropy flux for a class of systems for which the flux is given in terms of a system's observable. Since currents are often easily accessible in this class of systems, this bound should prove useful for estimating the entropy production in a broad variety of processes. We illustrate the applicability of the bound by considering a three-level maser engine and a system interacting with a squeezed bath.
