Quantum Communication and Quantum Networking. First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009, Revised Selected Papers

Research Article

Fiber Coupled Single Photon Detector with Niobium Superconducting Nanowire

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  • @INPROCEEDINGS{10.1007/978-3-642-11731-2_26,
        author={Go Fujii and Daiji Fukuda and Takayuki Numata and Akio Yoshizawa and Hidemi Tsuchida and Shuichiro Inoue and Tatsuya Zama},
        title={Fiber Coupled Single Photon Detector with Niobium Superconducting Nanowire},
        proceedings={Quantum Communication and Quantum Networking. First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009, Revised Selected Papers},
        proceedings_a={QUANTUMCOMM},
        year={2012},
        month={10},
        keywords={Superconducting nanowire single photon detector Niobium Kinetic inductance},
        doi={10.1007/978-3-642-11731-2_26}
    }
    
  • Go Fujii
    Daiji Fukuda
    Takayuki Numata
    Akio Yoshizawa
    Hidemi Tsuchida
    Shuichiro Inoue
    Tatsuya Zama
    Year: 2012
    Fiber Coupled Single Photon Detector with Niobium Superconducting Nanowire
    QUANTUMCOMM
    Springer
    DOI: 10.1007/978-3-642-11731-2_26
Go Fujii,*, Daiji Fukuda1, Takayuki Numata1, Akio Yoshizawa1, Hidemi Tsuchida1, Shuichiro Inoue2, Tatsuya Zama1
  • 1: National Instiute of Advanced Industrial Science and Technolagy
  • 2: Nihon University
*Contact email: go-fujii@aist.go.jp

Abstract

We have fabricated Niobium-based superconducting single photon detector (Nb-SSPD) for realizing high detection efficiency and fast reset time. The Nb-SSPD consisted of a 7 nm-thick and 200 nm-wide Nb meander line and exhibited the critical temperature and critical current density of 4 K and 4.6×10 A/cm, respectively. The Nb-SSPD was coupled to an optical fiber, and the reset time of 2.5 ns was observed with illumination of laser pulses at 1550 nm wavelength.