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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 9 — Sep. 1, 2013
  • pp: 2393–2400

Entanglement generation with coherent states using cross-Kerr nonlinearity

Si Yu Song, Shuhao Wang, Guo Fu Xu, and Gui Lu Long  »View Author Affiliations

JOSA B, Vol. 30, Issue 9, pp. 2393-2400 (2013)

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We propose methods for generating Bell-type entangled coherent states for quantum information processing. The protocols are completed using linear optical elements, single-photon detectors, and cross-Kerr nonlinearity. We investigate the decoherence effect on our protocols; photon loss is found to affect only the probability, not the fidelity, of the generation process. The entanglement of the generated entangled states is also analyzed using concurrence. Finally, the feasibility of our scheme is discussed using the continuous-time cross-phase modulation model. In the weak nonlinearity region, on the condition that θ2|αp|21, θ1, and σ21, our scheme is applicable theoretically.

© 2013 Optical Society of America

OCIS Codes
(270.1670) Quantum optics : Coherent optical effects
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

Original Manuscript: June 25, 2013
Manuscript Accepted: July 18, 2013
Published: August 16, 2013

Si Yu Song, Shuhao Wang, Guo Fu Xu, and Gui Lu Long, "Entanglement generation with coherent states using cross-Kerr nonlinearity," J. Opt. Soc. Am. B 30, 2393-2400 (2013)

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