Coherence-enhanced thermal amplification for small systems

Shanhe Su, Yanchao Zhang, Bjarne Andresen and Jincan Chen

Physica A: Statistical Mechanics and its Applications, 2021, vol. 569, issue C

Abstract: 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.

Keywords: Quantum coherence; Three-level system; Thermal amplification; Thermal conductance (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:569:y:2021:i:c:s037843712100025x

DOI: 10.1016/j.physa.2021.125753

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