From Event: SPIE Defense + Commercial Sensing, 2023
Superconducting nanowire single-photon detectors (SNSPDs) have long been the detector of choice for photon-counting applications in the near-infrared that demand high efficiency, high timing resolution and low dark counts. Extending the operation of these detectors to mid-infrared wavelengths above 2 µm would enable a host of applications in the fields of chemical and remote sensing, LIDAR and quantum optics. Pushing the range of these detectors deeper into the mid-infrared would also be of interest to the astronomical and dark matter communities. In this work we demonstrate long-wavelength sensitivity in SNSPDs by careful material and device optimization. We also show work towards efficient, low jitter devices in the mid-infrared.
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Gregor G. Taylor, Alexander B. Walter, Boris A. Korzh, Jason Allmaras, Bruce Bumble, Andrew D. Beyer, Emma E. Wollman, and Matthew D. Shaw, "Extending the sensitivity of superconducting nanowire single-photon detectors to infrared wavelengths," Proc. SPIE PC12512, Advanced Photon Counting Techniques XVII, PC1251205 (Presented at SPIE Defense + Commercial Sensing: May 02, 2023; Published: 15 June 2023); https://doi.org/10.1117/12.2663570.6328916317112.