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Regular version of the site

Article

Large active area superconducting single photon detector

Journal of Physics: Conference Series. 2019. Vol. 1410. No. 1. P. 012139.
Moshkova M., Morozov P., Divochiy A., Vakhtomin Y., Smirnov K.

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.