Implementing a topological quantum model using a cavity lattice  

作　　者：XIANG ZeLiang YU Ting ZHANG WenXian HU XueDong YOU JianQiang 

机构地区：[1]Department of Physics and State Key Laboratory of Surface Physics,Fudan University,Shanghai 200433,China [2]Key Laboratory of Micro and Nano Photonic Structures(Ministry of Education),Fudan University,Shanghai 200433,China [3]Department of Physics and Engineering Physics,Stevens Institute of Technology,Hoboken,New Jersey 07030-5991,USA [4]Department of Physics,Wuhan University,Wuhan 430072,China [5]Department of Physics,University at Buffalo-SUNY,Buffalo,New York 14260-1500,USA [6]Beijing Computational Science Research Center,Beijing 100084,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2012年第9期1549-1556,共8页中国科学:物理学、力学、天文学(英文版)

基　　金：supported by the National Basic Research Program of China(Grant No. 2009CB929302);the National Natural Science Foundation of China (Grant No. 91121015);the Ministry of Education of China (GrantNo. B06011);the U.S. National Science Foundation (Grant No. PHY-0925174)

摘　　要：Kitaev model has both Abelian and non-Abelian anyonic excitations. It can act as a starting point for topological quantum compu- tation. However, this model Hamiltonian is difficult to implement in natural condensed matter systems. Here we propose a quantum simulation scheme by constructing the Kitaev model Hamiltonian in a lattice of coupled cavities with embedded A-type three-level atoms. In this scheme, several parameters are tunable, for example, via external laser fields. Importantly, our scheme is based on currently existing technologies and it provides a feasible way of realizing the Kitaev model to explore topological excitations.Kitaev model has both Abelian and non-Abelian anyonic excitations.It can act as a starting point for topological quantum computation.However,this model Hamiltonian is difficult to implement in natural condensed matter systems.Here we propose a quantum simulation scheme by constructing the Kitaev model Hamiltonian in a lattice of coupled cavities with embedded Λ-type three-level atoms.In this scheme,several parameters are tunable,for example,via external laser fields.Importantly,our scheme is based on currently existing technologies and it provides a feasible way of realizing the Kitaev model to explore topological excitations.

关 键 词：quantum simulation topological quantum model cavity electrodynamics 

分 类 号：O413[理学—理论物理] O189[理学—物理]