title: Nonclassical interference and entanglement generation using a photonic crystal fiber pair photon source.
abstract: We demonstrate two key components for optical quantum information processing: a bright source of heralded single photons; and a bright source of entangled photon pairs. A pair of pump photons produces a correlated pair of photons at widely spaced wavelengths (583 nm and 900 nm), via a chi((3)) four-wave mixing process. We demonstrate nonclassical interference between heralded photons from independent sources with a visibility of 95% (after correction for background), and an entangled photon pair source, with a fidelity of 89% with a Bell state.
authors.affiliation: Centre for Communications Research, Department of Electrical and Electronic Engineering, University of Bristol, Merchant Venturers Building, Woodland Road, Bristol, BS8 1UB, United Kingdom.
authors.forename: Jérémie
authors.initials: J
authors.lastname: Fulconis
authors.forename: Olivier
authors.initials: O
authors.lastname: Alibart
authors.forename: Jeremy L
authors.initials: JL
authors.lastname: O'Brien
authors.forename: William J
authors.initials: WJ
authors.lastname: Wadsworth
authors.forename: John G
authors.initials: JG
authors.lastname: Rarity