Quantum machines powered by correlated baths
Quantum machines powered by correlated baths
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DOI：
10.1103/physrevresearch.2.033315
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发表时间：
2020-08-26
影响因子：
4.2
通讯作者：
Antezza, Mauro
中科院分区：
文献类型：
--
作者：
De Chiara, Gabriele;Antezza, Mauro
我们考虑由共享经典或量子关联的局部平衡库提供动力的热机。储集层用所谓的碰撞模型或重复作用模型来模拟。在我们的框架中，最初在热态下制备的两个存储粒子通过么正变换被关联，然后与形成工作流体的两个量子子系统局部相互作用。对于一类特殊的单位元，我们展示了应用于存储粒子的变换如何影响所传递的热量和所产生的功。然后，我们计算了随机选择么正变换时的热和功的分布，证明了总交换变换是最优的。最后，我们根据在机器的微观组成部分之间建立的经典和量子关联来分析机器的性能。
We consider thermal machines powered by locally equilibrium reservoirs that share classical or quantum correlations. The reservoirs are modeled by the so-called collisional model or repeated interactions model. In our framework, two reservoir particles, initially prepared in a thermal state, are correlated through a unitary transformation and afterward interact locally with the two quantum subsystems which form the working fluid. For a particular class of unitaries, we show how the transformation applied to the reservoir particles affects the amount of heat transferred and the work produced. We then compute the distribution of heat and work when the unitary is chosen randomly, proving that the total swap transformation is the optimal one. Finally, we analyze the performance of the machines in terms of classical and quantum correlations established among the microscopic constituents of the machine.