Nonequilibrium thermal transport in the two-mode qubit-resonator system

Nonequilibrium thermal transport in circuit quantum electrodynamics emerges as one interdisciplinary field, due to the tremendous advance of quantum technology. Here, we study steady-state heat flow in a two-mode qubit-resonator model under the influence of both the qubit-resonator and resonator-res...

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Bibliographic Details
Published in:Frontiers in physics 2022-08, Vol.10
Main Authors: Wang, Fei-Yu, Lu, Jin-Cheng, Wang, Zi, Duan, Li-Wei, Wang, Chen, Ren, Jie
Format: Article
Language:English
Subjects:
circuit quantum electrodynamics
cycle transition process
nonequilibrium thermal transport
quantum master equation
qubit-resonator interaction
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Summary:Nonequilibrium thermal transport in circuit quantum electrodynamics emerges as one interdisciplinary field, due to the tremendous advance of quantum technology. Here, we study steady-state heat flow in a two-mode qubit-resonator model under the influence of both the qubit-resonator and resonator-resonator interactions. The heat current is suppressed and enhanced by tuning up resonator-resonator interaction strength with given weak and strong qubit-resonator couplings respectively, which is cooperative contributed by the eigen-mode of coupled resonators and qubit-photon scattering. Negative differential thermal conductance and significant thermal rectification are exhibited at weak qubit-resonator coupling, which are dominated by cycle transition processes. Moreover, the heat flow through the resonator decoupled from the qubit can be dramatically enhanced via the resonator-resonator interaction, which is attributed by the generation of eigen-mode channels of resonators.
ISSN:2296-424X
2296-424X
DOI:10.3389/fphy.2022.964858