2020/02/19 by Risheng Cheng, Cheng, Risheng, Sihao Wang +6
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Applied Physics (physics.app-ph) #Bandwidth (computing) #Broadband #Computer science #Detector #Electronic engineering #Engineering #FOS: Physical sciences #Jitter #Materials science #Mechanical and Optical Resonators #Nanowire #Optics #Optics (physics.optics) #Optoelectronics #Photon #Photonic and Optical Devices #Photonics #Physics #Superconductivity #Telecommunications #Waveguide #physics.app-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.2002.08398
published in arXiv (Cornell University) (Cornell University)
arxiv created 2020/02/19 · openalex publication_date 2020/02/19 · arxiv updated 2020/02/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Despite very efficient superconducting nanowire single-photon detectors (SNSPDs) reported recently, combining their other performance advantages such as high speed and ultra-low timing jitter in a single device still remains challenging. In this work, we present a perfect absorber model and corresponding detector design based on a micron-long NbN nanowire integrated with a 2D-photonic crystal cavity of ultra-small mode volume, which promises simultaneous achievement of near-unity absorption, gigahertz counting rates and broadband optical response with a 3 dB bandwidth of 71 nm. Compared to previous stand-alone meandered and waveguide-integrated SNSPDs, this perfect absorber design addresses the trade space in size, efficiency, speed and bandwidth for realizing large on-chip single-photon detector arrays.