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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 12 — Dec. 1, 2010
  • pp: 2721–2726

Generation of multicolored tripartite entanglement by frequency doubling in a two-port resonator

Rongguo Yang, Shuqin Zhai, Kui Liu, Junxiang Zhang, and Jiangrui Gao  »View Author Affiliations


JOSA B, Vol. 27, Issue 12, pp. 2721-2726 (2010)
http://dx.doi.org/10.1364/JOSAB.27.002721


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Abstract

Multicolored multipartite entanglement is of great importance in quantum communication and quantum information networks. In this paper, we calculate the quantum fluctuations of the fundamental frequency pump beam and second-harmonic beams in a two-port frequency doubling resonator, and investigate the tripartite continuous-variable entanglement generated by this device for the first time, to our knowledge. The quantum correlation among fundamental frequency pump beam and two harmonic beams is studied using a necessary and sufficient criterion for Gaussian entanglement states, the positivity under partial transposition. It is found that two-color tripartite entanglement exists in a large range of pump intensities and analysis frequencies.

© 2010 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(270.0270) Quantum optics : Quantum optics
(270.6570) Quantum optics : Squeezed states

ToC Category:
Quantum Information

History
Original Manuscript: May 12, 2010
Revised Manuscript: October 12, 2010
Manuscript Accepted: October 13, 2010
Published: November 18, 2010

Citation
Rongguo Yang, Shuqin Zhai, Kui Liu, Junxiang Zhang, and Jiangrui Gao, "Generation of multicolored tripartite entanglement by frequency doubling in a two-port resonator," J. Opt. Soc. Am. B 27, 2721-2726 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-12-2721


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