Single-photon detection in the mid-infrared up to 10 micron wavelength using tungsten silicide superconducting nanowire detectors

Abstract

We developed superconducting nanowire single-photon detectors (SNSPDs) based on tungsten silicide (WSi) that show saturated internal detection efficiency up to a wavelength of 10 um. These detectors are promising for applications in the mid-infrared requiring ultra-high gain stability, low dark counts, and high efficiency such as chemical sensing, LIDAR, dark matter searches and exoplanet spectroscopy.

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• Information processing at the speed of light
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• Mid-Infrared Photon-Pair Generation in AgGaS${}_2$
• First Sub-MeV Dark Matter Search with the QROCODILE Experiment Using Superconducting Nanowire Single-Photon Detectors
• Highly sensitive single-molecule detection in slow protein ion beams
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• Single photon detection up to 2 um in pair of parallel microstrips based on NbRe ultrathin films
• Laser Cooling of Nuclear Magnons
• Two-photon Interface of Nuclear Spins Based on the Opto-Nuclear Quadrupolar Effect
• Determination of Mid-Infrared Refractive Indices of Superconducting Thin Films Using Fourier Transform Infrared Spectroscopy
• Photon counting for axion interferometry
• Tungsten Germanide Superconducting Nanowire Single-Photon Detectors with Saturated Internal Detection Efficiency at Wavelengths up to 29 μm
• Dark Matter Haloscope with a Disordered Dielectric Absorber
• Effect of Deposition Pressure on the Superconductivity of Ti40V60 Alloy Thin Films
• New constraints on dark matter from superconducting nanowires
• Low-dimensional platforms for single photon detection
• Ab initio modeling of nonequilibrium dynamics in superconducting detectors and qubits