TY - JOUR

T1 - Coherence-enhanced thermal amplification for small systems

AU - Su, Shanhe

AU - Zhang, Yanchao

AU - Andresen, Bjarne

AU - Chen, Jincan

PY - 2021/5/1

Y1 - 2021/5/1

N2 - 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. (C) 2021 Elsevier B.V. All rights reserved.

AB - 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. (C) 2021 Elsevier B.V. All rights reserved.

KW - Quantum coherence

KW - Three-level system

KW - Thermal amplification

KW - Thermal conductance

U2 - 10.1016/j.physa.2021.125753

DO - 10.1016/j.physa.2021.125753

M3 - Journal article

VL - 569

JO - Physica A: Statistical Mechanics and its Applications

JF - Physica A: Statistical Mechanics and its Applications

SN - 0378-4371

M1 - 125753

ER -