title: Bright, single-spatial-mode source of frequency non-degenerate, polarization-entangled photon pairs using periodically poled KTP.
abstract: We use two perpendicular crystals of periodically-poled KTP to directly generate polarization-entangled photon pairs, the majority of which are emitted into a single Gaussian spatial mode. The signal and idler photons have wavelengths of 810 nm and 1550 nm, respectively, and the photon-pair generation rate is 1.2x107 sec-1 for a pump power of 62 mW. The apparatus is compact, flexible, and easily to use.
authors.forename: Matthew
authors.initials: M
authors.lastname: Pelton
authors.forename: Philip
authors.initials: P
authors.lastname: Marsden
authors.forename: Daniel
authors.initials: D
authors.lastname: Ljunggren
authors.forename: Maria
authors.initials: M
authors.lastname: Tengner
authors.forename: Anders
authors.initials: A
authors.lastname: Karlsson
authors.forename: Anna
authors.initials: A
authors.lastname: Fragemann
authors.forename: Carlota
authors.initials: C
authors.lastname: Canalias
authors.forename: Fredrik
authors.initials: F
authors.lastname: Laurell