Wigner function for the generalized excited pair coherent state  

作　　者：孟祥国 王继锁 梁宝龙 李洪奇 

机构地区：[1]Department of Physics, Liaocheng University [2]Department of Physics, Heze University

出　　处：《Chinese Physics B》2008年第5期1791-1797,共7页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No 10574060);the Natural Science Foundation of Shandong Province of China (Grant No Y2004A09)

摘　　要：This paper introduces the generalized excited pair coherent state （GEPCS）. Using the entangled state 〈η〉 representation of Wigner operator, it obtains the Wigner function for the GEPCS. In the ρ-γ phase space, the variations of the Wigner function distributions with the parameters q, α, k and l are discussed. The tomogram of the GEPCS is calculated with the help of the Radon transform between the Wigner operator and the projection operator of the entangled state ｜η1, η2, τ1, τ2｜. The entangled states ｜η〉 and ｜η1, η2, τ1, τ2〉 provide two good representative space for studying the Wigner functions and tomograms of various two-mode correlated quantum states.This paper introduces the generalized excited pair coherent state （GEPCS）. Using the entangled state 〈η〉 representation of Wigner operator, it obtains the Wigner function for the GEPCS. In the ρ-γ phase space, the variations of the Wigner function distributions with the parameters q, α, k and l are discussed. The tomogram of the GEPCS is calculated with the help of the Radon transform between the Wigner operator and the projection operator of the entangled state ｜η1, η2, τ1, τ2｜. The entangled states ｜η〉 and ｜η1, η2, τ1, τ2〉 provide two good representative space for studying the Wigner functions and tomograms of various two-mode correlated quantum states.

关 键 词：generalized excited pair coherent state Wigner function TOMOGRAM entangled state representation 

分 类 号：O431.2[机械工程—光学工程]