Conditional preparation of single photons using parametric downconversion : A recipe for purity

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DOIResolve DOI: http://doi.org/10.1088/1367-2630/10/9/093011
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TypeArticle
Journal titleNew Journal of Physics
Volume10
Issue9
Pages129; # of pages: 29
AbstractIn an experiment reported recently (Mosley et al 2008 Phys. Rev. Lett. 100 133601), we demonstrated that, through group velocity matched parametric downconversion, heralded single photons can be generated in pure quantum states without spectral filtering. The technique relies on factorable photon pair production, initially developed theoretically in the strict collinear regime; focusing—required in any experimental implementation—can ruin this factorability. Here, we present the numerical model used to design our single photon sources and minimize spectral correlations in the light of such experimental considerations. Furthermore, we show that the results of our model are in good agreement with measurements made on the photon pairs and give a detailed description of the exact requirements for constructing this type of source.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number15743663
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Record identifier3d039c65-1d2c-41d2-a2dd-65035f5fee37
Record created2010-06-25
Record modified2016-05-09
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