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| Generation of three-mode W-type entangled coherent states in free-travelling optical fields | |
| 作者单位： | 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： | 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. |
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