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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 6,
  • Issue 4,
  • pp. 303-306
  • (2008)

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

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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, photodetectors, 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.

© 2008 Chinese Optics Letters

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