Optical quantum simulation of Abelian gauge field using cold atomic ensembles coupled with arrays of optical cavities  

作　　者：LIU Yi Min LIU Rong Wan 

机构地区：[1]Department of Physics, Shaoguan University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第12期2259-2265,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation ofChina(Grant Nos.11372122,10874122 and 11074070);the Program for Excellent Talents at the University of Guangdong Province(GuangdongTeacher Letter[1010]No.79)

摘　　要：A potentially practical scheme is proposed to realize optical quantum simulation of artificial Abelian gauge field in a scalable architecture consisting of cold atomic ensembles with optical cavities.In the present model,the collective excitations of cold atomic ensembles can be converted to the bosonic modes within the low-excitation limit,where the structure of two-dimension(2D)square plaquette enables the polaritons to move like a charged particle subjected to an external magnetic field.We find that the energy spectrum of this hybrid system exhibits a shape of Hofstadter buttery.Our work provides a different perspective to the quantum simulation of condensed matter and many-body physics in the context of cavity quantum electrodynamics.The experimental feasibility are justified using the existing techniques.A potentially practical scheme is proposed to realize optical quantum simulation of artificial Abelian gauge field in a scalable architecture consisting of cold atomic ensembles with optical cavities. In the present model, the collective excitations of cold atomic ensembles can be converted to the bosonic modes within the low-excitation limit, where the structure of two-dimension （2D） square plaquette enables the polaritons to move like a charged particle subjected to an external magnetic field. We find that the energy spectrum of this hybrid system exhibits a shape of Hofstadter buttery. Our work provides a different perspective to the quantum simulation of condensed matter and many-body physics in the context of cavity quantum electrodynamics. The experimental feasibility are justified using the existing techniques.

关 键 词：gauge field quantum information processing cavity array 

分 类 号：O431.2[机械工程—光学工程]