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Generation of three-mode W-type entangled coherent states in free-travelling optical fields

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【作者】 郭裕； 匡乐满；

【Author】 Yu Guo Leman Kuang ~1Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education,and Department of Physics,Hunan Normal University,Changsha 410081 ~2Department of Physics and Electronic Science,Changsha University of Science and Technology,Changsha 410076

【机构】 Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education and Department of Physics Hunan Normal University； Changsha 410081 Department of Physics and Electronic Science； Changsha University of Science and Technology； Changsha 410076； Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education and Department of Physics； Hunan Normal University； Changsha 410081；

【摘要】 <正>We propose a scheme for generation of three-mode W-type entangled coherent states(ECSs)in free- travelling optical fields by using a single-photon source,coherent state sources,beam splitters,photode- tectors,and three-mode cross-Kerr media.The scheme consists of a Mach-Zehnder interferometer(MZI) in which each arm contains a cross-Kerr medium.We calculate the success probability of the generated W-type ECSs,and the total success probability is unity under the ideal conditions.

【Abstract】 We propose a scheme for generation of three-mode W-type entangled coherent states(ECSs)in free- travelling optical fields by using a single-photon source,coherent state sources,beam splitters,photode- tectors,and three-mode cross-Kerr media.The scheme consists of a Mach-Zehnder interferometer(MZI) in which each arm contains a cross-Kerr medium.We calculate the success probability of the generated W-type ECSs,and the total success probability is unity under the ideal conditions.

【关键词】 coherent； entangled； travelling； entanglement； interferometer； distant； resonant； unitary； photon； realization；
【基金】 the National Fundamental Research Program(No.2007CB925204);the National Natural Science Foundation of China(No.10325523 and 10775048);the Foundation of the Education Ministry of China,and the Education Committee of Hunan Province.
  • 【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2008年04期
  • 【分类号】O431.2
  • 【被引频次】1
  • 【下载频次】46
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