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Proceedings Paper

Ultrafast superconducting single-photon detector with reduced-size active area coupled to a tapered lensed single-mode fiber
Author(s): Maria V. Sidorova; Alexander Divochiy; Yury B. Vakhtomin; Konstantin Smirnov
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Paper Abstract

We present an ultrafast NbN Superconducting single-photon detector (SSPD) with active area of 3x3 μm2, which reveals better timing performances than a previously developed SSPD with active area of 10x10 μm2. The improved SSPD demonstrates the record timing jitter <25 ps, ultra short recovery time <2 ns, extremely low dark counts level, and high detection efficiency (DE) in a wide spectral range from visible to near-infrared. The record parameters were obtained thanks to the development of a new technique of an effective optical coupling between a detector with reduced-size active area and a standard single-mode telecommunication fiber. The advantages of a new approach are experimentally confirmed by performed electro-optical measurements of the device performances.

Paper Details

Date Published: 6 May 2015
PDF: 9 pages
Proc. SPIE 9504, Photon Counting Applications 2015, 950408 (6 May 2015); doi: 10.1117/12.2178131
Show Author Affiliations
Maria V. Sidorova, Moscow State Pedagogical Univ. (Russian Federation)
Alexander Divochiy, CJSC Superconducting Nanotechnology "SCONTEL" (Russian Federation)
Yury B. Vakhtomin, Moscow State Pedagogical Univ. (Russian Federation)
CJSC Superconducting Nanotechnology "SCONTEL" (Russian Federation)
Konstantin Smirnov, Moscow State Pedagogical Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 9504:
Photon Counting Applications 2015
Ivan Prochazka; Roman Sobolewski; Ralph B. James, Editor(s)

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