Generation of indistinguishable and pure heralded single photons with tunable bandwidth

Xiaojuan Shi, Alejandra Valencia, Martin Hendrych, Juan P. Torres
2008 Optics Letters  
We describe a new scheme to fully control the joint spectrum of paired photons generated in spontaneous parametric down-conversion. We show the capability of this method to generate frequency-uncorrelated photon pairs that are pure and indistinguishable, and whose bandwidth can be readily tuned. Importantly, the scheme we propose here can be implemented in any nonlinear crystal and frequency band of interest.
doi:10.1364/ol.33.000875 pmid:18414562 fatcat:64bonpupwba6xbkukka6qcqase