Saturation efficiency for detecting 1550 nm photons with a 2 × 2 array of Mo0.8Si0.2 nanowires at 2.

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Amorphous materials are attractive candidates for fabricating the superconducting nanowire single-photon detectors (SNSPDs) due to their superior tolerance and scalability over crystalline niobium nitride. However, the reduced superconducting transition temperature degenerates both operating temperature and saturation efficiency. Herein, the SNSPD (6.5 nm thickness and 50 nm width) based on the amorphous Mo0.8Si0.2 film with a high optical absorption coefficient demonstrates close-to-unity intrinsic detection efficiency for 1550 nm photons from 75 mK to 2.2 K. Further, a high-performance array SNSPD with optimized 90 nm-width wires is also demonstrated. As-fabricated uniform 4-pixel SNSPD exhibits a saturation plateau for the photon counts at 2.2 K, which overcomes the limitation of operation at low temperature (
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期刊论文Saturation efficiency for detecting 1550 nm photons with a 2 × 2 array of Mo0.8Si0.2 nanowires at 2.发表于2021年9期PhotonicsResearch作者FeiyanLi,HangHan,QiChen,BiaoZhang,HanBao,YueDai,RuiGe,ShuyaGuo,GuanglongHe,YueFei,ShuchaoYang,XiaohanWang,HaoWang,XiaoqingJia,QingyuanZhao,LabaoZhang,LinKang,PeihengWu,本篇论文的所有权归原作者FeiyanLi,HangHan,QiChen,BiaoZhang,HanBao,YueDai,RuiGe,ShuyaGuo,GuanglongHe,YueFei,ShuchaoYang,XiaohanWang,HaoWang,XiaoqingJia,QingyuanZhao,LabaoZhang,LinKang,PeihengWu所有,如果您对本文有版权争议,可与客服联系进行内容授权或下架。