Non-Geometric Conditional Phase Gate by Quantum Zeno Dynamics in Laser-Excited Nitrogen-Vacancy Centers  

作　　者：苏万钧 沈利托 吴怀志 林秀 

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

出　　处：《Communications in Theoretical Physics》2013年第1期11-16,共6页理论物理通讯（英文版）

基　　金：Supported by the National Fundamental Research Program under Grant No. 2012CB921601;National Natural Science Foundation of China under Grant No. 10974028;the Doctoral Foundation of the Ministry of Education of China under Grant No. 20093514110009;the Natural Science Foundation of Fujian Province under Grant No. 2009J06002

摘　　要：Based on the quantum Zeno dynamics,we propose a two-qubit non-geometric conditional phase gate between two nitrogen-vacancy centers coupled to a whispering-gallery mode cavity.The varying phases design of periodic laser can be used for realizing non-geometric conditional phase gate,and the cavity mode is virtually excited during the gate operation.Thus,the fidelity of the gate operation is insensitive to cavity decay and the fluctuation of the preset laser intensity.The numerical simulation with a realistic set of experimental parameters shows that the gate fidelity 0.987 can be within reached in the near future.

关 键 词：conditional phase gate quantum Zeno dynamics 

分 类 号：O431.2[机械工程—光学工程]