Impedance-Matched Differential Superconducting Nanowire Detectors
Marco Colangelo, Boris Korzh, Jason P. Allmaras, Andrew D. Beyer, Andrew Mueller, Ryan M. Briggs, Bruce Bumble, M. C. Runyan, Martin J. Stevens, Adam N. McCaughan, Di Zhu, S. J. Smith, Wolfgang Becker, Lautaro Narváez, Joshua C. Bienfang, Simone Frasca, Angel E. Velasco, Edward Ramirez, Alexander B. Walter, Ekkehart Schmidt, Emma E. Wollman, M. Spiropulu, Richard P. Mirin, Sae Woo Nam, Karl K. Berggren, Matthew D. Shaw
Abstract
Superconducting nanowire single-photon detectors (SNSPDs) are the highest-performance photon-counting technology in the near infrared, but traditional designs typically trade off between timing resolution and detection efficiency. The authors utilize transmission-line engineering and differential readout to achieve a design with high detection efficiency and low jitter simultaneously. This design also enables imaging capabilities and photon-number resolution, and is compatible with commercial time taggers. The device is a versatile solution for photon counting in various applications, including quantum computing, quantum communication, biomedicine, and ranging.