Four-mode coherent-entangled state and its application  

作　　者：Li Hong-Qi Ren Ting-Qi Zhang Yun-Hai Xu Xing-Lei 李洪奇;任廷琦;张运海;徐兴磊(Department of Physics,Qufu Normal University,Qufu 273165,China;Department of Physics,Heze University,Heze 274015,China;Key Laboratory of Quantum Communication and Calculation,Heze University,Heze 274015,China)

机构地区：[1]Department of Physics,Qufu Normal University,Qufu 273165,China [2]Department of Physics,Heze University,Heze 274015,China [3]Key Laboratory of Quantum Communication and Calculation,Heze University,Heze 274015,China

出　　处：《Chinese Physics B》2012年第1期79-86,共8页中国物理B（英文版）

基　　金：Project supported by the Natural Science Foundation of Shandong Province,China(Grant No.Y2008A16);the Specialized Research Fund for the Doctoral Program of Higher Education,China(Grant No.20103705110001);the University Experimental Technology Foundation of Shandong Province,China(Grant No.S04W138);the Natural Science Foundation of HezeUniversity of Shandong Province,China(Grants Nos.XY07WL01 and XY08WL03)

摘　　要：A new kind of four-mode continuous variable coherent-entangled state is proposed in the Fock space by using the technique of integration within an ordered product, which exhibits both the properties of a coherent state and an entangled state, and spans a complete and orthonormal representation. The conjugate state of the four-mode continuous variable coherent-entangled state is derived by using the Fourier transformation. Moreover, a simple experimental protocol of generating a four-mode continuous variable coherent-entangled state is proposed by using beam splitters. As applications of this four-mode continuous variable coherent-entangled state, a four-mode entangled state and a four-mode squeezing-Fresnel operator are constructed.A new kind of four-mode continuous variable coherent-entangled state is proposed in the Fock space by using the technique of integration within an ordered product, which exhibits both the properties of a coherent state and an entangled state, and spans a complete and orthonormal representation. The conjugate state of the four-mode continuous variable coherent-entangled state is derived by using the Fourier transformation. Moreover, a simple experimental protocol of generating a four-mode continuous variable coherent-entangled state is proposed by using beam splitters. As applications of this four-mode continuous variable coherent-entangled state, a four-mode entangled state and a four-mode squeezing-Fresnel operator are constructed.

关 键 词：coherent-entangled state beam splitter squeezing-Fresnel operator technique of inte-gration within an ordered product 

分 类 号：O431.2[机械工程—光学工程]