Proposal for Direct Measurement of the Wigner Function of a Cavity Field via Raman Coupling  

作　　者：ZHENG Shi-Biao ZHU Xi-Wen 郑仕标;朱熙文(Department of Electronic Science and Applied Physics,Fuzhou University,Fuzhou 350002;Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071)

机构地区：[1]Department of Electronic Science and Applied Physics,Fuzhou University,Fuzhou 350002 [2]Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071

出　　处：《Chinese Physics Letters》2000年第12期882-884,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.19734060 and 19604013.

摘　　要：We propose a scheme for the reconstruction of a cavity field state.In the scheme the cavity field is first displaced by a microwave source,and then couples with a three-level A-type atom in a Raman manner.After an appropriate interaction time the measurement of the difference between the probabilities of the atom being in two ground states directly yields the Wigner function for the field state.The scheme can be easily generalized to measure the Wigner function of an entangled state of two spatially separated single-mode cavities.

关 键 词：state. scheme WIGNER 

分 类 号：O41[理学—理论物理]