A 16-channel fiber array-coupled superconducting single-photon detector array with average system detection efficiency over 60% at telecom wavelength
| Autor: | Zhang, Wei-Jun, Xu, Guang-Zhao, You, Li-Xing, Zhang, Cheng-Jun, Huang, Hao, Ou, Xin, Sun, Xing-Qu, Xiong, Jia-Min, Li, Hao, Wang, Zhen, Xie, Xiao-Ming |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Optics Letters 2021 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OL.418219 |
| Popis: | We report a compact, scalable, and high-performance superconducting nanowire single-photon detector (SNSPD) array by using a multichannel optical fiber array-coupled configuration. For single pixels with an active area of 18 um in diameter and illuminated at the telecom wavelength of 1550 nm, we achieved a pixel yield of 13/16 on one chip, an average system detection efficiency of 69% at a dark count rate of 160 cps, a minimum timing jitter of 74 ps, and a maximum count rate of ~40 Mcps. The optical crosstalk coefficient between adjacent channels is better than -60 dB. The performance of the fiber array-coupled detectors is comparable with a standalone detector coupled to a single fiber. Our method is promising for the development of scalable, high-performance, and high-yield SNSPDs. Comment: 8 pages, 12 figures (including Supplementary Material) |
| Databáze: | arXiv |
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