Controlled Phase Flip Gate and Its Application in Low-Q Cavities by Single-Photon Input-Output Process  

作　　者：王波 陈琼 杨万里 寇谡鹏 

机构地区：[1]Department of Physics, Beijing Normal University [2]Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University [3]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences

出　　处：《Communications in Theoretical Physics》2012年第8期225-228,共4页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant Nos.10774163,11104326,11004226,11174035;National Basic Research Program of China(973Program)under Grant Nos.2011CB921803,2012CB921704;China Postdoctoral Science Foundation Funded Project under Grant No.2012M510342

摘　　要：By employing an auxiliary cavity, we investigate the possibility to implement the conditional phase flip （CPF） gate on two atoms confined in separate 1ow-Q cavities by single-photon input-output process, based on the Faraday rotation. This indicates a universal quantum computing available with sophisticated cavity QED techniques. As examples, we carry out generation of duster states of distant atomic qubits and accomplish a teleportation based on Bell-state measurement in low-Q cavities.

关 键 词：conditional phase flip gate faraday rotation cluster states 

分 类 号：O431.2[机械工程—光学工程]