The n-Qubit W State of Ground-State Atoms Using Cavity QED and Single Photon Detection  

作　　者：潘长宁 张俊香 赵学辉 

机构地区：[1]School of Science, Hunan University of Technology, Zhuzhou 412008 [2]State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006

出　　处：《Chinese Physics Letters》2010年第3期33-36,共4页中国物理快报（英文版）

摘　　要：We present a simple scheme for the probabilistic generation of the $n$-qubit W state of three-level systems in cavity quantum electrodynamics. Once the W state is prepared, it will be insensitive to the spontaneous emission of atoms due to the fact that only the two degenerate ground states of the three-level atoms are involved. With time evolution of the system, the success probability and the experimental feasibility are also discussed.We present a simple scheme for the probabilistic generation of the $n$-qubit W state of three-level systems in cavity quantum electrodynamics. Once the W state is prepared, it will be insensitive to the spontaneous emission of atoms due to the fact that only the two degenerate ground states of the three-level atoms are involved. With time evolution of the system, the success probability and the experimental feasibility are also discussed.

关 键 词：Atomic and molecular physics Optics quantum optics and lasers 

分 类 号：O562.1[理学—原子与分子物理] TN918[理学—物理]