title: Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber.
abstract: We study theoretically the generation of photon pairs by spontaneous four-wave mixing (SFWM) in photonic crystal optical fiber. We show that it is possible to engineer two-photon states with specific spectral correlation ("entanglement") properties suitable for quantum information processing applications. We focus on the case exhibiting no spectral correlations in the two-photon component of the state, which we call factorability, and which allows heralding of single-photon pure-state wave packets without the need for spectral post filtering. We show that spontaneous four wave mixing exhibits a remarkable flexibility, permitting a wider class of two-photon states, including ultra-broadband, highly-anticorrelated states.
authors: K
authors: K
authors: Garay-Palmett
authors: H J
authors: HJ
authors: McGuinness
authors: Offir
authors: O
authors: Cohen
authors: J S
authors: JS
authors: Lundeen
authors: R
authors: R
authors: Rangel-Rojo
authors: A B
authors: AB
authors: U'ren
authors: M G
authors: MG
authors: Raymer
authors: C J
authors: CJ
authors: McKinstrie
authors: S
authors: S
authors: Radic
authors: I A
authors: IA
authors: Walmsley