Coherent control of self-contained quantum systems offers the possibility to fabricate smallest thermal transistors. The steady coherence created by the delocalization of electronic excited states arouses nonlinear heat transports in non-equilibrium environment. Applying this result to a three-level quantum system, we show that quantum coherence gives rise to negative differential thermal resistances, making the thermal transistor suitable for thermal amplification. The results demonstrate that quantum coherence facilitates efficient thermal signal processing and can open a new field in the application of quantum thermal management devices.

中文翻译：

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小型系统的相干增强热放大

自包含量子系统的相干控制为制造最小的热敏晶体管提供了可能。电子激发态离域所产生的稳定相干性会在非平衡环境中引起非线性热传递。将这一结果应用于三能级量子系统，我们证明了量子相干性会引起负的差分热阻，从而使该热晶体管适合于热放大。结果表明，量子相干性促进了高效的热信号处理，并为量子热管理设备的应用开辟了新的领域。