Common Environmental Effects on Quantum Thermal Transistor

Quantum thermal transistor is a microscopic thermodynamical device that can modulate and amplify heat current through two terminals by the weak heat current at the third terminal. Here we study the common environmental effects on a quantum thermal transistor made up of three strong-coupling qubits....

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Published in:Entropy (Basel, Switzerland) Switzerland), 2021-12, Vol.24 (1), p.32
Main Authors: Liu, Yu-Qiang, Yu, Deng-Hui, Yu, Chang-Shui
Format: Article
Language:English
Subjects:
Amplification
Approximation
common environmental effects
Environmental effects
Evolution
Heat
heat currents
open quantum system
Quantum dots
quantum transistor
Qubits (quantum computing)
Semiconductor devices
Thermodynamics
Transistors
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cited_by cdi_FETCH-LOGICAL-c469t-8929146901c7e284ec9f94251971422554428a0f28b89e96c36fdc477c5749d93
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description Quantum thermal transistor is a microscopic thermodynamical device that can modulate and amplify heat current through two terminals by the weak heat current at the third terminal. Here we study the common environmental effects on a quantum thermal transistor made up of three strong-coupling qubits. It is shown that the functions of the thermal transistor can be maintained and the amplification rate can be modestly enhanced by the skillfully designed common environments. In particular, the presence of a dark state in the case of the completely correlated transitions can provide an additional external channel to control the heat currents without any disturbance of the amplification rate. These results show that common environmental effects can offer new insights into improving the performance of quantum thermal devices.
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subjects Amplification
Approximation
common environmental effects
Environmental effects
Evolution
Heat
heat currents
open quantum system
Quantum dots
quantum transistor
Qubits (quantum computing)
Semiconductor devices
Thermodynamics
Transistors
title Common Environmental Effects on Quantum Thermal Transistor
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