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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. 2 — Feb. 1, 2013
  • pp: 355–361

Highly efficient optical Fredkin gate with weak nonlinearities and classical information feed-forward

Meng-Zheng Zhu and Xin-Guo Yin  »View Author Affiliations


JOSA B, Vol. 30, Issue 2, pp. 355-361 (2013)
http://dx.doi.org/10.1364/JOSAB.30.000355


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Abstract

A scheme is proposed to implement the optical quantum Fredkin gate with weak nonlinearities and feed-forward. The distinctive feature of the present scheme is that the present Fredkin gate has four sets of possible output ports, and the total success probability for each set of the output ports is near 1/4 without ancillary single-photon. The present scheme requires nonlinear strength of the order of 10 3 and mean photon number of the probe coherent beam of the order of 10 6 so that the discrimination error probability does not exceed 10 4 . These features show that it is still possible to operate in the regime of weak cross-Kerr nonlinearities, and the amplitude of the probe coherent beam is physically reasonable with current technology. These facts make us more confident in the feasibility of the proposed scheme.

© 2013 Optical Society of America

OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Nonlinear Optics

History
Original Manuscript: July 26, 2012
Revised Manuscript: December 9, 2012
Manuscript Accepted: December 10, 2012
Published: January 16, 2013

Citation
Meng-Zheng Zhu and Xin-Guo Yin, "Highly efficient optical Fredkin gate with weak nonlinearities and classical information feed-forward," J. Opt. Soc. Am. B 30, 355-361 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-2-355

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