An Efficient and Polarization Sensitive SNSPD with Coupled Asymmetric SRR-Loaded Cavity

被引:0
|
作者
Yang, Meng Meng [1 ]
Zheng, Fan [1 ]
Zhu, Guang Hao [1 ]
Jin, Biao Bing [1 ]
机构
[1] Nanjing Univ, Res Inst Superconduct Elect, 22 Hankou Rd, Nanjing 210093, Jiangsu, Peoples R China
关键词
SNSPD; CASRR; polarization sensitivity;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Highly efficient SNSPD with high polarization sensitivity is useful in the field of quantum communication and optical imaging. Here we propose a SNSPD design in which the superconducting nanowire is embedded in a resonant cavity loaded with a coupled asymmetric split ring resonator (CASRR). The superconducting nanowire is placed in a properly selected position where the electric field is zero for TM illumination and non-zero for TE illumination, as caused by the polarization sensitive response of the CASRR. Through numerical simulations, we have designed a SNSPD whose TE absorption efficiency is 85.5% and the polarization extinction ratio (PER) is 585. Besides, a low filling factor of 0.2 and a large width of 120nm help to reduce the response time of SNSPD and facilitate its fabrication processes. Our numerical simulation based analysis shows the proposed SNSPD has a good tolerance for various fabrication parameters.
引用
收藏
页码:518 / 519
页数:2
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