Fiber Coupled Single Photon Detector with Niobium Superconducting Nanowire

Go Fujii; Daiji Fukuda; Takayuki Numata; Akio Yoshizawa; Hidemi Tsuchida; Shuichiro Inoue; Tatsuya Zama

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.

Keywords: Superconducting nanowire single photon detector Niobium Kinetic inductance

Published: 2012-10-11

: http://dx.doi.org/10.1007/978-3-642-11731-2_26