title: Ultranarrow-band photon-pair source compatible with solid state quantum memories and telecommunication networks.
abstract: We report on a source of ultranarrow-band photon pairs generated by widely nondegenerate cavity-enhanced spontaneous down-conversion. The source is designed to be compatible with Pr(3+) solid state quantum memories and telecommunication optical fibers, with signal and idler photons close to 606 nm and 1436 nm, respectively. Both photons have a spectral bandwidth around 2 MHz, matching the bandwidth of Pr(3+) doped quantum memories. This source is ideally suited for long distance quantum communication architectures involving solid state quantum memories.
authors.affiliation: ICFO-The Institute of Photonic Sciences, Mediterranean Technology Park, 08860 Castelldefels, Spain.
authors.forename: Julia
authors.initials: J
authors.lastname: Fekete
authors.forename: Daniel
authors.initials: D
authors.lastname: Rieländer
authors.forename: Matteo
authors.initials: M
authors.lastname: Cristiani
authors.forename: Hugues
authors.initials: H
authors.lastname: de Riedmatten