超导电性
成核
材料科学
探测器
光电子学
光子
微带线
无定形固体
凝聚态物理
光学
物理
化学
结晶学
热力学
作者
Feiyan Li,Yu Guo,Kangjie Liu,Labao Zhang,Qi Chen,Xiaohan Wang,Biao Zhang,Y. Dai,Jiajun Tan,Ge He,Yue Fei,Hao Wang,Xuecou Tu,Qing-Yuan Zhao,Xiaoqing Jia,Lin Kang,Jian Chen,Peiheng Wu
摘要
In this Letter, we report on pattern engineering in superconducting microstrips to achieve a fast and efficient detection of a single-photon over a large detection area. The proposed detector is composed of hole-patterned superconductor microstrips fabricated with a 5-nm-thick amorphous molybdenum silicide film. It exhibits a saturated internal detection efficiency at 1550 nm with a negligible dark count rate and a recovery time of 9 ns with a large detection area (50 × 50 μm2). The simulation reveals that the holes patterned in the superconductor microstrip stimulate the nucleation of the vortex, which constitutes a major key to achieving the efficient detection of photons. This work paves the way for the facile and prolonged regulation of vortex nucleation in superconductors, which shows promise for developing high-performance large-area superconductor single-photon detectors.
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