Abstract
Coupling of quantum-dot circuits to microwave photons enables us to investigate photon-assisted quantum transport.Here,we revisit this typical circuit quantum electrodynamical setup by introducing the Kerr non-linearity of photons.By exploiting quantum critical behavior,we propose a powerful scheme to control the power-harvesting efficiency in the microwave regime,where the driven-dissipative optical system acts as an en-ergy pump.It drives electron transport against a load in the quantum-dot circuit.The energy transfer and,consequently,the harvesting efficiency are enhanced near the critical point.As the critical point moves towards to low input power,high efficiency within experimental parameters is achieved.Our results complement funda-mental studies of photon-to-electron conversion at the nanoscale and provide practical guidance for designs of integrated photoelectric devices through quantum criticality.
基金项目
National Natural Science Foundation of China(12204405)
National Natural Science Foundation of China(21873033)
National Natural Science Foundation of China(22273029)
Yunnan Fundamental Research Project(202301AT070108)
Yunnan Fundamental Research Project(202401AW070005)
维普
万方数据