Pure single photon generation by type-I PDC with backward-wave amplification
Year: 2009
Type: article
Abstract: We explore a promising method of generating pure heralded single photons. Our approach is based on parametric down-conversion 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.
Source: Optics Express
DOI: 10.1364/oe.17.003441
Authors: A. Christ, A. Eckstein, P. J. Mosley, C. Silberhorn
Institution: Max Planck Institute for the Science of Light
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W2043723661