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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 6 — Jun. 1, 2007
  • pp: 1365–1368

Highly efficient generation of entangled photon pair by spontaneous parametric downconversion in defective photonic crystals

Yong Zeng, Ying Fu, Xiaoshuang Chen, Wei Lu, and Hans Ågren  »View Author Affiliations


JOSA B, Vol. 24, Issue 6, pp. 1365-1368 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001365


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Abstract

We study the process of spontaneous parametric downconversion in a one-dimensional defective quadratic nonlinear photonic crystal. It is shown that the strong confinements of both the pump and signal waves around the defective layer result in a giant enhancement of the entangled photon-pair generation. An enhancement factor as high as 3.4 × 10 6 is obtained in our defective structure based on the dual-localized modes. Furthermore, the linewidth of the downconverted fields is only 0.1 nm . Such a photonic crystal structure can be applied as a highly efficient source of entangled photon pairs for highly integrated all-optical circuits.

© 2007 Optical Society of America

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.0270) Quantum optics : Quantum optics

ToC Category:
Quantum Optics

History
Original Manuscript: August 10, 2006
Revised Manuscript: February 5, 2007
Manuscript Accepted: March 6, 2007
Published: May 17, 2007

Citation
Yong Zeng, Ying Fu, Xiaoshuang Chen, Wei Lu, and Hans Ågren, "Highly efficient generation of entangled photon pair by spontaneous parametric downconversion in defective photonic crystals," J. Opt. Soc. Am. B 24, 1365-1368 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-6-1365

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