Generation of Multiphoton Entangled States with Linear Optical Elements  

作　　者：盛宇波 邓富国 周宏余 

机构地区：[1]The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, and Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875 [2]Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875

出　　处：《Chinese Physics Letters》2008年第10期3558-3561,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10604008 and Foundation for the Author of National Excellent Doctoral Dissertation of China under Grant No 200723.

摘　　要：We propose a linear optical protocol to generate three-photon and four-photon entangled states without resorting to entangled sources. The setup in this protocol is composed of three beam splitters and two half-wave plates. We can obtain three-photon and four-photon entangled states with postselection, as with other protocols. This protocol has the advantage of high efficiency and is more feasible than others.We propose a linear optical protocol to generate three-photon and four-photon entangled states without resorting to entangled sources. The setup in this protocol is composed of three beam splitters and two half-wave plates. We can obtain three-photon and four-photon entangled states with postselection, as with other protocols. This protocol has the advantage of high efficiency and is more feasible than others.

关 键 词：the power-law exponents PRECIPITATION durative abrupt precipitation change 

分 类 号：O431.2[机械工程—光学工程]