一种多功能量子热器件：有无内耦合
A multifunctional quantum thermal device: with and without inner coupling
摘要：
通过调节系统内部耦合强度和外部热浴温度，将一个连接在三个热浴上的三能级系统改造成一个集阀门、制冷器、放大器和温度计于一体的量子态的微型热器件。我们讨论的作用，内耦合以及稳态量子相干性在这些热函数使用Redfield主方程下的部分长期近似。无需系统内部耦合的辅助，即可建立低温终端的高灵敏度温度计。我们对这种多功能热器件的研究为与量子相干性相关的量子热力学提供了更深层次的理解。
英文摘要：
A three-level system attached to three thermal baths is manipulated to be a microscopic thermal device integrating a valve, a refrigerator, an amplifier, and a thermometer in the quantum regime, via tuning the inner coupling strength of the system and the temperatures of the external baths. We discuss the role of the inner coupling as well as the steady-state quantum coherence in these thermal functions using the Redfield master equation under a partial secular approximation. A high-sensitive thermometer for the low-temperature terminal can be established without the assistance from the inner coupling of the system. Our study of this multifunctional thermal device provides a deeper insight to the underlying quantum thermodynamics associated with the quantum coherence.
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