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Superconducting Nanowire Single Photon Detector

The Superconducting Nanowire Single Photon Detector (SNSPD) is a quantum-limit superconducting optical detector based on the Cooper-pair breaking effect by a single photon. Photon technology (Photec) provides the high-performance SNSPDs with higher detection efficiency, lower dark count rate, higher counting rate, and lower timing jitter, that have been widely applied in the fields of quantum communication, computating, LiDAR, and bioimaging, etc. 

Our SNSPD advantages: High efficiency up to 98%, Low DCR less than 0.02 cps, MMF coupling SNSPD with low DCR and SNSPD or MIR wavelengths. The distinctive parameters of our SNSPD have received positive feedback from the market. For instance, our SNSPD with high detection efficiency up to 98% was used in the world's first experiment to verify the superiority of optical quantum computing. Our low DCR SNSPD, less than 0.02cps, was used in the 1000 km long-distance QKD experiment. Our large sensitive area SNSPD with multimode fiber coupling technology was applied in LiDAR system, and so on.  

PHOTEC leverages our SNSPDs to provide cutting-edge solutions to our customers and drive innovation in the field of quantum technology.

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    System detection efficiency

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    Maximum count rate

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    Dark count rate

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    Global customers

  • 01
    Low dark count

    With our 0.02 cps ultra-low DCR SNSPD, our customers have set a world record for QKD distance over 1000 km.

    • Integrated filtering technology

    • DCR less than 1 cps, while SDE>90% at 1550 nm

    • Response wavelength: 1550 ± 10 nm

    • Other wavelengths can be customized

    Low dark count
  • 02
    High detection efficiency

    Our hundreds high SDE SNSPDs have contributed to the first realization of quantum computational superiority in optical quantum computing.

    • Original double-layer nanowire absorption enhancement design

    • Detection efficiency SDE>95%, up to 98%@1550 nm

    • Multi wavelength options: 532, 850, 1064, 1310, 1550, 2000 nm

    High detection efficiency
  • 03
    Large active area and MMF coupling

    Our large-area SNSPD has enabled our customers to demonstrate a photon-counting distributed free-space spectroscopy using the lidar technique.

    • Large receiving active area, suitable for various free space coupling applications

    • From visible light to IR 1064nm, 1550nm, 2000nm and up to 3000nm

    • 50 μm multimode fiber coupling

    • Unique low-temperature filtering design with DCR as low as 100 cps

    • Customized free space coupling

    Large active area and MMF coupling
  • 04
    Multi pixel array and PNR
    • 4/8/16 pixel SNSPD Array

    • Photon number resolution (Up to 16 PNR), suitable for characterization of quantum light sources

    • Maximum count rate>GHz, suitable for high-speed optical communication

    Multi pixel array and PNR