Generation of GHZ-like and cluster-like quadripartite entangled states for continuous variable using a set of quadrature squeezed states

查看全文 作　　者：SU [1]XiaoLong;JIA [1]XiaoJun;XIE [1]ChangDe;PENG [1]KunChi

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-electronics,Shanxi University,Taiyuan 030006,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2008年第51卷第1期,共13页

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos.10674088 and 60608012);Program for Changjiang Scholars andInnovative Research Team in University(Grant No.IRT0516) 摘　　要：We designed the experimental generation system of the optical GHZ-like and cluster-like quadripartite entangled states for continuous variables.We theoretically demonstrated that the two different types of quadripartite entangled states can be obtained by the linearly optical transformation of four amplitude-quadrature and phase-quadrature squeezed states produced from a pair of nondegenerate optical parametric amplifiers under appropriate phase relations.The criteria for full inseparability of quadripartite cluster-like state were deduced,and the dependency of the quadripartite entanglement on the initial squeezing degree,the transmission efficiencies of the system and the detection efficiency of homodyne detection were numerically calculated. 关键词：continuous variable quadripartite ENTANGLEMENT GHZ-like STATE cluster-like STATE

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Generation of GHZ-like and cluster-like quadripartite entangled states for continuous variable using a set of quadrature squeezed states

参考文献(10)

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耦合文献(78)

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