首页|Nonreciprocal Photon Blockade Based on Zeeman Splittings Induced by a Fictitious Magnetic Field
Nonreciprocal Photon Blockade Based on Zeeman Splittings Induced by a Fictitious Magnetic Field
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Quantum nonreciprocity,such as nonreciprocal photon blockade,has attracted a great deal of attention due to its unique applications in quantum information processing.Its implementation primarily relies on rotating nonlinear systems,based on the Sagnac effect.Here,we propose an all-optical approach to achieve nonreciprocal photon blockade in an on-chip microring resonator coupled to a V-type Rb atom,which arises from the Zeeman splittings of the atomic hyperfine sublevels induced by the fictitious magnetic field of a circularly polarized control laser.The system manifests single-photon blockade or multi-photon tunneling when driven from opposite directions.This nonreciprocity results from the directional detunings between the countercirculating probe fields and the V-type atom,which does not require the mechanical rotation and facilitates integration.Our work opens up a new route to achieve on-chip integrable quantum nonreciprocity,enabling applications in chiral quantum technologies.
苏欣、金飚兵、唐江山、夏可宇
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College of Engineering and Applied Sciences,National Laboratory of Solid State Microstructures,and Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210023,China
Research Institute of Superconductor Electronics(RISE)& Key Laboratory of Optoelectronic Devices and Systems with Extreme Performances of MOE,School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key R&D Program of ChinaProgram for Innovative Talents and Teams in JiangsuChina Postdoctoral Science FoundationJiangsu Funding Program for Excellent Postdoctoral Talent