[ED3] Detector and Readout 2

4:45 PM - 5:15 PM JST(7:45 AM - 8:15 AM UTC)

[ED3-01-INV] Emerging Technologies for Superconducting Strip Photon Detectors

*Shigehito Miki¹, Masahiro Yabuno¹, Shigeyuki Miyajima¹, Hirotaka Terai¹ (1. NICT (Japan))

Keywords:

SSPD,SNSPD,SWSPD,SFQ

Superconducting strip photon detector (SSPD) has been recognized as promising detectors for a wide range of applications including quantum information technology, quantum optics, laser ranging, free space optical communications, fluorescence microscopes, and so on. This is attributed to their broad high system detection efficiency, low dark count rates, and low timing jitter. Recently, SSPD technology has undergone advancements in various directions. For example, while superconducting strips narrower than ~100 nm have traditionally been considered essential for achieving high detection efficiency in SSPDs, we have successfully demonstrated high-performance operation using a 20-μm-wide superconducting strip which is 200 times wider than conventional designs. Arraying SSPDs has led to enhanced functionality, such as higher operation speed, photon-number resolution, imaging capabilities, and so on. Cryogenic signal processing technology for SSPD arrays and multi-channel SSPDs has also been progressed. In particular, various processing readout circuits based on superconducting single flux quantum (SFQ) circuits have been designed and demonstrated, including time-multiplexer, address encoder, coincidence circuit, and so on. In this talk, we present our recent research on these emerging technologies for SSPDs.