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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 1 — Jan. 1, 2013
  • pp: 71–78

Efficient entanglement concentration for arbitrary single-photon multimode W state

Lan Zhou, Yu-Bo Sheng, Wei-Wen Cheng, Long-Yan Gong, and Sheng-Mei Zhao  »View Author Affiliations


JOSA B, Vol. 30, Issue 1, pp. 71-78 (2013)
http://dx.doi.org/10.1364/JOSAB.30.000071


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Abstract

We put forward an efficient entanglement concentration protocol (ECP) for recovering the single-photon less-entangled W state into the maximally entangled W state with only two conventional auxiliary photons. The ECP includes two local steps, both of which are based on the weak cross-Kerr nonlinearities and the variable beam splitter (VBS). Benefiting from the cross-Kerr nonlinearities and the VBS, the ECP can be used repeatedly to further concentrate the less-entangled W state. All the advantages indicate that our protocol may be feasible and convenient in current quantum communications areas.

© 2012 Optical Society of America

OCIS Codes
(270.4180) Quantum optics : Multiphoton processes
(270.5565) Quantum optics : Quantum communications
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

History
Original Manuscript: August 16, 2012
Revised Manuscript: October 18, 2012
Manuscript Accepted: October 28, 2012
Published: December 6, 2012

Citation
Lan Zhou, Yu-Bo Sheng, Wei-Wen Cheng, Long-Yan Gong, and Sheng-Mei Zhao, "Efficient entanglement concentration for arbitrary single-photon multimode W state," J. Opt. Soc. Am. B 30, 71-78 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-1-71


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