Design of a micrometer-long superconducting nanowire perfect absorber for efficient high-speed single-photon detection

查看全文 作　　者：RISHENG [1]CHENG;SIHAO [1]WANG;CHANG-LING [1,2]ZOU;HONG [1]X.TANG

机构地区：[1]Department of Electrical Engineering,Yale University,New Haven,Connecticut 06511,USA;[2]Department of Optics,University of Science and Technology of China,Hefei 230026,China

出　　处：《Photonics Research》索引2020年第8卷第8期,共8页

基　　金：Army Research Office(W911NF-16-2-0151);Division of Emerging Frontiers in Research and Innovation(EFMA-1640959);Multidisciplinary University Research Initiative(FA95550-15-1-0029). 摘　　要：Despite very efficient superconducting nanowire single-photon detectors(SNSPDs)reported recently,combining their other performance advantages such as high speed and ultralow timing jitter in a single device still remains challenging.In this work,we present a perfect absorber model and the corresponding detector design based on a micrometer-long NbN nanowire integrated with a 2D photonic crystal cavity of ultrasmall 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 waveguideintegrated SNSPDs,this perfect absorber design addresses the trade space in size,efficiency,speed,and bandwidth for realizing large on-chip single-photon detector arrays. 关键词：ABSORBER PERFECT high

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Design of a micrometer-long superconducting nanowire perfect absorber for efficient high-speed single-photon detection

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