Abstract We introduce a new kind of four-mode continuous variable entangled state in Fock space. The completeness relation and the partly nonorthonormal property of such a state are proven. The scheme to generate this state is presented by combining a symmetrical beamsplitter, a parametric down-conversion and a polarizer. After making a single-mode quadrature amplitude measurement, the remaining three modes are kept in entanglement. And its applications are also discussed.
Received: 13 July 2008
Revised: 23 September 2008
Accepted manuscript online:
Fund: Project
supported by the Natural Science Foundation of Jiangxi Province,
China (Grant No 2007GZW0171) and the Foundation of Education
Department of Jiangxi Province, China (Grant No [2007] 136).
Cite this article:
Kuang Mai-Hua(匡买花), Ma Shan-Jun(马善钧), Liu Dong-Mei(刘冬梅), and Wang Shu-Jing(王淑静) Four-mode continuous-variables entangled state: generation from beam splitter, a parametric down-conversion and a polarizer 2009 Chin. Phys. B 18 1065
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