Heralding pure single photons: a comparision between counter-propagating and co-propagating twin photons

E. Brambilla; T. Corti; A. Gatti

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arXiv · 1607.06012

Heralding pure single photons: a comparision between counter-propagating and co-propagating twin photons

E. Brambilla·T. Corti·A. Gatti

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Abstract

We investigate the possibility of generating pure heralded single photons through spontaneous parametric down-conversion comparing the counter-propagating geometry studied in [1] with more conventional co-propagating configurations which enhance the purity of the heralded photon state through the technique of group-velocity matching. We estimate the Schmidt number associated to the temporal modes as a function of the pump pulse duration for three particular configurations, showing how the different phase-matching conditions influences the degree of separability that can be achieved.

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E. Brambilla, T. Corti, A. Gatti. 2016-07-20. Heralding pure single photons: a comparision between counter-propagating and co-propagating twin photons. https://arxiv.org/abs/1607.06012

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