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	强吸收结构高速超导纳米线单光子探测器(英文)
	蔡涵 ; 徐正 ; 尹合钰 ; 日盛 ; 李铁夫 ; 刘建设 ; 陈炜 ; Han CAI ; Zheng XU ; Heyu YIN ; Sheng RI ; Tiefu LI ; Jianshe LIU ; Wei CHENT
	2016-03-30 ; 2016-03-30
关键词	超导纳米线 单光子探测器 SNSPD 吸收率 superconducting nanowire single-photon detector SNSPD absorptivity O572.212 TB383.1
其他题名	HIGH-SPEED SUPERCONDUCTING NANOWIRE SINGLE PHOTON DETECTORS WITHEFFICIENT PHOTON ABSORPTION STRUCTURES
中文摘要	本文研究具有强吸收结构的高速超导纳米线单光子探测器(SNSPD)的设计与仿真.该SNSPD基于高折射率入射介质和空气腔结构,可以提高超导纳米线的光子吸收率.与现有超导单光子探测器结构相比,在相同材料和厚度的超导超薄膜制成纳米线的条件下,用更低的占空比就可以实现接近于100%的吸收率,这使得电子束曝光步骤的难度大大降低.而SOI衬底的采用则可以同时保证超导薄膜的高质量生长,不影响探测器的本征量子效率.另外,在保证同样大的有效探测面积的条件下,由于需要的纳米线的总长度显著减小,制备过程中发生缺陷的概率显著降低,探测器的最高计数率可以得到提升.; We present the design and simulation results of high-speed superconducting nanowire single photon detectors with efficient photon absorption.The SNSPDs are based on a structure of high refractive index materials and air cavities which are aimed at increasing the photon absorption efficiency in the superconducting nanowire single photon detectors(SNSPDs).Compared with that of other existing detectors,a high absorption up to 100% is expected for this structure of SNSPDs for a lower filling factor at the same conditions of superconducting nanowier's materials and thickness which could greatly reduce the difficulties of the fabrication,especially in electron beam lithography.And SOI substrate is used to support the growth of high quality superconducting thin films.In addition,under the condition of the same effective detection area,the defects produced in the preparation process can be significantly reduced and the maximum count rates of the detectors can be remarkably improved because the total length of the nanowire is greatly shortened.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/146609]
专题	清华大学
推荐引用方式 GB/T 7714	蔡涵,徐正,尹合钰,等. 强吸收结构高速超导纳米线单光子探测器(英文)[J],2016, 2016.
APA	蔡涵.,徐正.,尹合钰.,日盛.,李铁夫.,...&Wei CHENT.(2016).强吸收结构高速超导纳米线单光子探测器(英文)..
MLA	蔡涵,et al."强吸收结构高速超导纳米线单光子探测器(英文)".(2016).

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