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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 5 — Mar. 2, 2009
  • pp: 3441–3446

Pure single photon generation by type-I PDC with backward-wave amplification

A. Christ, A. Eckstein, P. J. Mosley, and C. Silberhorn  »View Author Affiliations

Optics Express, Vol. 17, Issue 5, pp. 3441-3446 (2009)

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We explore a promising method of generating pure heralded single photons. Our approach is based on parametric downconversion in a periodically-poled waveguide. However, unlike conventional downconversion sources, the photon pairs are counter-propagating: one travels with the pump beam in the forward direction while the other is backpropagating towards the laser source. Our calculations reveal that these downconverted two-photon states carry minimal spectral correlations within each photon-pair. This approach offers the possibility to employ a new range of downconversion processes and materials like PPLN (previously considered unsuitable due to its unfavorable phasematching properties) to produce heralded pure single photons over a broad frequency range.

© 2009 Optical Society of America

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

ToC Category:
Nonlinear Optics

Original Manuscript: January 5, 2009
Revised Manuscript: February 9, 2009
Manuscript Accepted: February 9, 2009
Published: February 19, 2009

A. Christ, A. Eckstein, P. J. Mosley, and C. Silberhorn, "Pure single photon generation by type-I PDC with backward-wave amplification," Opt. Express 17, 3441-3446 (2009)

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