title: Generation of indistinguishable and pure heralded single photons with tunable bandwidth.
abstract: We describe a new scheme to fully control the joint spectrum of paired photons generated in spontaneous parametric downconversion. 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 can be implemented in any nonlinear crystal and frequency band of interest.
authors.affiliation: ICFO-Institut de Ciencies Fotoniques, Department of Signal Theory and Communications, Universitat Politecnica de Catalunya, Castelldefels, 08860 Barcelona, Spain.
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Shi
authors.forename: Alejandra
authors.initials: A
authors.lastname: Valencia
authors.forename: Martin
authors.initials: M
authors.lastname: Hendrych
authors.forename: Juan P
authors.initials: JP
authors.lastname: Torres