Quantum heat transport is considered as an indispensable branch of quantum thermodynamics to potentially improve performance of thermodynamic devices.We theoretically propose a dissipative qubit-photon system composed...Quantum heat transport is considered as an indispensable branch of quantum thermodynamics to potentially improve performance of thermodynamic devices.We theoretically propose a dissipative qubit-photon system composed of multiple coupled resonators interacting with a single two-level qubit,to explore the steady-state heat transport by tuning both the inter-resonator photon hopping and the qubit-photon coupling.Specifically in the three-mode case,the dramatic enhancement and suppression of the heat current into the central resonator can be modulated by the corresponding frequency,compared to the currents into two edge resonators.Moreover,fruitful cycle current components are unraveled at weak qubit-photon coupling,which are crucial to exhibit the nonmonotonic feature with increase of the reservoir temperature bias.In the one-dimensional case under the mean-field framework,the influence of the photon hopping on heat transport is analyzed.The steady-state heat current is comparatively enhanced to the single-mode limit at weak qubit-photon coupling,stemming from the nonvanishing mean-field photon excitation parameter and the additional cycle current component.We hope these obtained results may have possible applications in quantum thermodynamic manipulation and energy harvesting.展开更多
基金the National Natural Science Foundation of China(Grant No.11704093)the National Natural Science Foundation of China(Grant No.12174345)+2 种基金the Opening Project of Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technologythe Jiangsu Key Disciplines of the Fourteenth Five-Year Plan(Grant No.2021135)Zhejiang Provincial Natural Science Foundation of China(Grant No.LZ22A040002)。
文摘Quantum heat transport is considered as an indispensable branch of quantum thermodynamics to potentially improve performance of thermodynamic devices.We theoretically propose a dissipative qubit-photon system composed of multiple coupled resonators interacting with a single two-level qubit,to explore the steady-state heat transport by tuning both the inter-resonator photon hopping and the qubit-photon coupling.Specifically in the three-mode case,the dramatic enhancement and suppression of the heat current into the central resonator can be modulated by the corresponding frequency,compared to the currents into two edge resonators.Moreover,fruitful cycle current components are unraveled at weak qubit-photon coupling,which are crucial to exhibit the nonmonotonic feature with increase of the reservoir temperature bias.In the one-dimensional case under the mean-field framework,the influence of the photon hopping on heat transport is analyzed.The steady-state heat current is comparatively enhanced to the single-mode limit at weak qubit-photon coupling,stemming from the nonvanishing mean-field photon excitation parameter and the additional cycle current component.We hope these obtained results may have possible applications in quantum thermodynamic manipulation and energy harvesting.
