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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 15 — Jul. 18, 2011
  • pp: 13949–13956

Directly produced three-color entanglement by quasi-phase-matched third-harmonic generation

Y. B. Yu, H. J. Wang, M. Xiao, and S. N. Zhu  »View Author Affiliations


Optics Express, Vol. 19, Issue 15, pp. 13949-13956 (2011)
http://dx.doi.org/10.1364/OE.19.013949


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Abstract

A new scheme is presented to directly produce fundamental, second-, and third-harmonic three-color continuous-variable (CV) entangled beams by cascaded quasi-phase-matched third-harmonic generation (THG) in an optical cavity. THG can be achieved with high efficiency through a coupled sum-frequency process between the second-harmonic and the fundamental fields. It is demonstrated that the three beams (fundamental, second-, and third-harmonic fields) are entangled with each other according to the CV entanglement criterion. In this scheme, only one crystal and one pump field can generate three-color CV entangled beams separated by an octave in frequency through quasi-phase-matched cascaded nonlinear process, which may be very useful for the applications in quantum communication and computation networks.

© 2011 OSA

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

ToC Category:
Nonlinear Optics

History
Original Manuscript: February 7, 2011
Revised Manuscript: March 18, 2011
Manuscript Accepted: June 17, 2011
Published: July 7, 2011

Citation
Y. B. Yu, H. J. Wang, M. Xiao, and S. N. Zhu, "Directly produced three-color entanglement by quasi-phase-matched third-harmonic generation," Opt. Express 19, 13949-13956 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-15-13949


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