2006/11/22 by Jeremie Fulconis, J. Fulconis, Olivier Alibart +6 · 7 citations
Computer Science · Engineering · Physics and Astronomy · #Computer science #Interference (communication) #Optical Network Technologies #Optics #Orbital Angular Momentum in Optics #Photon #Photon entanglement #Photonics #Physics #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum information science #Quantum key distribution #Quantum mechanics #Quantum optics #Single-photon source #Spontaneous parametric down-conversion #Telecommunications #quant-ph
paper · pdf · doi:10.1103/physrevlett.99.120501
published as Phys. Rev. Lett. 99, 120501 (2007) · 4 pages, 3 figures
arxiv created 2006/11/22 · openalex publication_date 2007/09/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.