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Journal of Nanophotonics

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

This paper presents an ultrafast niobium nitride (NbN) superconducting single-photon detector (SSPD) with an active area of 3×3  μm2 that offers better timing performance metrics than the previous SSPD with an active area of 7×7  μm2. The improved SSPD demonstrates a record timing jitter (<25  ps), an ultrashort recovery time (<2  ns), an extremely low dark count rate, and a high detection efficiency in a wide spectral range from visible part to near infrared. The record parameters were obtained due to the development of a new technique providing effective optical coupling between a detector with a reduced active area and a standard single-mode telecommunication fiber. The advantages of the new approach are experimentally confirmed by taking electro-optical measurements.

Paper Details

Date Published: 16 September 2015
PDF: 7 pages
J. Nanophoton. 9(1) 093051 doi: 10.1117/1.JNP.9.093051
Published in: Journal of Nanophotonics Volume 9, Issue 1
Show Author Affiliations
Maria V. Sidorova, Moscow State Pedagogical Univ. (Russian Federation)
Alexander V. Divochiy, CJSC Superconducting Nanotechnology "SCONTEL" (Russian Federation)
Yury B. Vakhtomin, Moscow State Pedagogical Univ. (Russian Federation)
CJSC Superconducting Nanotechnology "SCONTEL" (Russian Federation)
Konstantin V. Smirnov, Moscow State Pedagogical Univ. (Russian Federation)
CJSC Superconducting Nanotechnology "SCONTEL" (Russian Federation)
National Research Univ. Higher School of Economics (Russian Federation)


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