首页|Engineering Quantum Criticality for Quantum Dot Power Harvesting

Engineering Quantum Criticality for Quantum Dot Power Harvesting

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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.

王金义、年磊磊、吕京涛

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School of Physics and Astronomy,Yunnan University,Kunming 650091,China

School of Physics,Institute for Quantum Science and Engineering,and Wuhan National High Magnetic Field Center,Huazhong University of Science and Technology,Wuhan 430074,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYunnan Fundamental Research ProjectYunnan Fundamental Research Project

122044052187303322273029202301AT070108202401AW070005

2024

10.1088/0256-307X/41/2/020503

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子：0.515
ISSN：0256-307X
年,卷(期)：2024.41(2)
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