论文标题
量子制冷与不确定因果秩序
Quantum Refrigeration with Indefinite Causal Order
论文作者
论文摘要
我们提出了一个热力学制冷循环，该周期使用不确定的因果秩序来实现非古典冷却。该循环在控制量子量纯度的同时冷却冷藏液。我们首先表明，在不确定的因果秩序中的两个相同温度$ t $ t $的输入状态的应用可能导致输出状态，温度不等于$ t $。我们研究了制冷循环的特性，并表明在热力学上，结果与电路模型中的统一量子力学兼容，但无法经典地实现。我们认为，可以使用桌面光子学实验实现此周期。我们的结果表明，开发了一种新的热力学资源理论，其中允许以无限期的因果秩序进行操作。
We propose a thermodynamic refrigeration cycle which uses Indefinite Causal Orders to achieve non-classical cooling. The cycle cools a cold reservoir while consuming purity in a control qubit. We first show that the application to an input state of two identical thermalizing channels of temperature $T$ in an indefinite causal order can result in an output state with a temperature not equal to $T$. We investigate the properties of the refrigeration cycle and show that thermodynamically, the result is compatible with unitary quantum mechanics in the circuit model but could not be achieved classically. We believe that this cycle could be implemented experimentally using tabletop photonics. Our result suggests the development of a new class of thermodynamic resource theories in which operations are allowed to be performed in an Indefinite Causal Order.
