Common environmental effects on quantum thermal transistor
arXiv:2109.08842 · doi:10.3390/e24010032
Abstract
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 environment effect can offer new insight on improving the performance of quantum thermal devices.
arXiv comment14 pages, 9 figures
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