Supercontinuum single-photon detector using multilayer superconducting nanowires

Hao Li; Yong Wang; Lixing You; Heqing Wang; Hui Zhou; Peng Hu; Weijun Zhang; Xiaoyu Liu; Xiaoyan Yang; Lu Zhang; Zhen Wang; Xiaoming Xie

doi:doi:10.1364/PRJ.7.001425

Photonics Research, 2019, 7 (12): 12001425, Published Online: Nov. 19, 2019

Supercontinuum single-photon detector using multilayer superconducting nanowires Download： 818次

Hao Li ^1,2†Yong Wang ^1,2†Lixing You ^1,2,3,*Heqing Wang ^1,2Hui Zhou ^1,3Peng Hu ^1,2,3Weijun Zhang ^1,2Xiaoyu Liu ^1,2Xiaoyan Yang ^1,2Lu Zhang ^1,2Zhen Wang ^1,2Xiaoming Xie ^1,2

Author Affiliations

¹ State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences (CAS), Shanghai 200050, China

² CAS Center for Excellence in Superconducting Electronics, Shanghai 200050, China

³ Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Figures & Tables

Fig. 1. Cross-sectional schematics of multilayer SNSPDs with (a) two- and (c) three-layer superconducting nanowires. The detector structure includes the following: (bottom to top) Si substrate, Al, SiO2 layer, and multiple-layer superconducting nanowires. The total absorption (red line) and separated absorption of each layer nanowire of multilayer SNSPDs with (b) two- and (d) three-layer nanowires.

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Fig. 2. SEM image of the active area of a bilayer nanowire detector. The inset shows the magnified image of the nanowire. The device diameter, the nanowire width, and the nanowire pitch are 15 μm, 80 nm, and 160 nm, respectively.

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Fig. 3. (a) SDE versus bias current at different wavelengths (the dark square line is DCR as a function of bias current). (b) SDE as a function of wavelength from 500 to 1700 nm (blue line), and the red line is the simulated absorptance for comparison.

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Fig. 4. (a) Histogram of time-correlated photon counts measured at a wavelength of 1550 nm (blue circle; the red line is the fitted curve using Gaussian distribution). (b) Oscilloscope persistence map of the response at a bias current of 14.5 μA.

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Fig. 5. Autocorrelation function G(τ) at the bias current of 14.5 μA.

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Hao Li, Yong Wang, Lixing You, Heqing Wang, Hui Zhou, Peng Hu, Weijun Zhang, Xiaoyu Liu, Xiaoyan Yang, Lu Zhang, Zhen Wang, Xiaoming Xie. Supercontinuum single-photon detector using multilayer superconducting nanowires[J]. Photonics Research, 2019, 7(12): 12001425.

Supercontinuum single-photon detector using multilayer superconducting nanowires Download： 818次

Fig. 2. SEM image of the active area of a bilayer nanowire detector. The inset shows the magnified image of the nanowire. The device diameter, the nanowire width, and the nanowire pitch are 15 μm, 80 nm, and 160 nm, respectively.

Fig. 3. (a) SDE versus bias current at different wavelengths (the dark square line is DCR as a function of bias current). (b) SDE as a function of wavelength from 500 to 1700 nm (blue line), and the red line is the simulated absorptance for comparison.

Fig. 4. (a) Histogram of time-correlated photon counts measured at a wavelength of 1550 nm (blue circle; the red line is the fitted curve using Gaussian distribution). (b) Oscilloscope persistence map of the response at a bias current of 14.5 μA.

Fig. 5. Autocorrelation function G(τ) at the bias current of 14.5 μA.

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Supercontinuum single-photon detector using multilayer superconducting nanowires Download： 818次

Fig. 2. SEM image of the active area of a bilayer nanowire detector. The inset shows the magnified image of the nanowire. The device diameter, the nanowire width, and the nanowire pitch are 15 μm, 80 nm, and 160 nm, respectively.

Fig. 3. (a) SDE versus bias current at different wavelengths (the dark square line is DCR as a function of bias current). (b) SDE as a function of wavelength from 500 to 1700 nm (blue line), and the red line is the simulated absorptance for comparison.

Fig. 4. (a) Histogram of time-correlated photon counts measured at a wavelength of 1550 nm (blue circle; the red line is the fitted curve using Gaussian distribution). (b) Oscilloscope persistence map of the response at a bias current of 14.5 μA.

Fig. 5. Autocorrelation function G(τ) at the bias current of 14.5 μA.

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