Superconducting nanowire single-photon detector with polarization insensitivity, ultrafast response, and high efficiency

被引:0
|
作者
Gu, Min [1 ,2 ,3 ]
Zhang, Shangkun [1 ,2 ,3 ]
Wang, Xianghao [1 ,2 ,3 ]
Wang, Wencong [1 ,2 ,3 ]
Liu, Dongmei [1 ,2 ,3 ]
Wu, Xianqiu [1 ,2 ]
机构
[1] South China Normal Univ, Guangdong Basic Res Ctr Excellence Struct & Fundam, Key Lab Atom & Subatom Struct & Quantum Control, Minist Educ,Sch Phys, Guangzhou 510006, Peoples R China
[2] South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou 510006, Guangdong, Peoples R China
[3] Quantum Sci Ctr Guangdong Hong Kong Macao Greater, Shenzhen 518000, Peoples R China
来源
OPTICS EXPRESS | 2024年 / 32卷 / 09期
基金
中国国家自然科学基金;
关键词
All Open Access; Gold;
D O I
10.1364/OE.516976
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This study proposed what we believe to be a novel method for fabricating superconducting nanowire single-photon detectors (SNSPDs) with high efficiency, polarization insensitivity, and ultrafast response. To achieve these properties in niobium nitride (NbN) SNSPDs, the periodic four-split rings (PFSR) were positioned above the nanowires. This design uses the localized surface plasmon resonance to enhance the electric field around nanowires. For an incident light with a wavelength of 1550 nm, the PFSR-SNSPD structure achieved a polarization extinction ratio of 1.0064 and absorptions of 88.94% and 88.37% under TE and TM polarizations, respectively. The nanowire length was reduced by 85% using a meandering nanowire arrangement with a fill factor of 0.074.
引用
收藏
页码:15537 / 15545
页数:9
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