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Title: High-fidelity frequency down-conversion of visible entangled photon pairs with superconducting single-photon detectors

We experimentally demonstrate a high-fidelity visible-to-telecommunicationwavelength conversion of a photon by using a solid-state-based difference frequency generation. In the experiment, one half of a pico-second visible entangled photon pair at 780 nm is converted to a 1522-nm photon. Using superconducting single-photon detectors with low dark count rates and small timing jitters, we observed a fidelity of 0.93±0.04 after the wavelength conversion.
Authors:
; ; ; ;  [1] ; ; ; ;  [2] ; ;  [3] ;  [4]
  1. Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531 (Japan)
  2. Advanced ICT Research Institute, National Institute of Information and Communications Technology (NICT), Kobe 651-2492 (Japan)
  3. Advanced ICT Research Institute, National Institute of Information and Communications Technology (NICT), Koganei, Tokyo 184-8795 (Japan)
  4. Photon Science Center, The University of Tokyo, Bunkyo-ku, 113-8656 (Japan)
Publication Date:
OSTI Identifier:
22390705
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1633; Journal Issue: 1; Conference: 11. International Conference on Quantum Communication, Measurement and Computation, Vienna (Austria), 30 Jul - 3 Aug 2012; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONVERSION; COUNTING RATES; PHOTONS; QUANTUM ENTANGLEMENT; QUANTUM MECHANICS; SOLIDS; WAVELENGTHS