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

Journal Article · Thu Dec 04 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4903153· OSTI ID:22390705

Ikuta, Rikizo; Kato, Hiroshi; Kusaka, Yoshiaki; Yamamoto, Takashi; Imoto, Nobuyuki ^[1]; Miki, Shigehito; Yamashita, Taro; Terai, Hirotaka; Wang, Zhen ^[2]; Fujiwara, Mikio; Sasaki, Masahide ^[3]; Koashi, Masato ^[4]

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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)

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.

• OSTI ID: 22390705
• Journal Information: AIP Conference Proceedings, Vol. 1633, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONVERSION
COUNTING RATES
PHOTONS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
SOLIDS
WAVELENGTHS