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Moshkova M, Morozov P, Divochiy A, Vakhtomin Y, Smirnov K. Large active area superconducting single photon detector. In: J. Phys.: Conf. Ser. Vol 1410.; 2019. 012139.
Abstract: We present development of large active area superconducting single-photon detectors well coupled with standard 50 μm-core multi-mode fiber. The sensitive area of the SSPD is patterned using the photon-number-resolving design and occupies an area of 40×40 μm2. Using this approach, we have obtained excellent specifications: system detection efficiency of 47% measured using a 900 nm laser and low dark count rate of 100 cps. The main advantages of the approach presented are a very short dead time of the detector of 22 ns and FWHM jitter value of about 130 ps.
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