Pure single photon generation by type-I PDC with backward-wave amplification
Optics Express, Vol. 17, Issue 5, pp. 3441-3446 (2009)
http://dx.doi.org/10.1364/OE.17.003441
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Abstract
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
History
Original Manuscript: January 5, 2009
Revised Manuscript: February 9, 2009
Manuscript Accepted: February 9, 2009
Published: February 19, 2009
Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-5-3441
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