论文标题
通过量子开关从相干激活的地图中提取工作
Work extraction from coherently activated maps via quantum switch
论文作者
论文摘要
我们表征了在量子控制的顺序中应用两个地图对通过单一循环及其优化提取工作提取过程的影响。该控件基于量子开关模型，该模型以顺序适用地图不一定与基本因果结构兼容，并且原则上可以实验实现。首先，我们表明，通过量子开关模型的量子图的激活始终需要与连续应用相比，在麦内型的非负增益。我们还确定了地图应实现的条件，以实现非零的麦角型增益。然后，我们对应用于两级系统的地图进行彻底的分析，并为实现麦角镜不连贯部分的积极增益提供了一般条件。我们的结果用几个示例进行了说明，并应用于量子和$ d $维量子系统。特别是，我们证明了可以从两个连贯控制的储层热元的系统中提取非零的工作。
We characterize the impact that the application of two maps in a quantum-controlled order has on the process of work extraction via unitary cycles and its optimization. The control is based on the quantum switch model that applies maps in an order not necessarily compatible with the underlying causal structure and, in principle, can be implemented experimentally. First, we show that the activation of quantum maps through the quantum switch model always entails a non-negative gain in ergotropy compared to their consecutive application. We also establish a condition that the maps should fulfill in order to achieve a non-zero ergotropic gain. We then perform a thorough analysis of maps applied to a two-level system and provide general conditions for achieving a positive gain on the incoherent part of ergotropy. Our results are illustrated with several examples and applied to qubit and $d$-dimensional quantum systems. In particular, we demonstrate that a non-zero work can be extracted from a system thermalized by two coherently controlled reservoirs.
