Ultrafast superconducting single-photon detector with a reduced active area coupled to a tapered lensed single-mode fiber

Maria  V. Sidorova; Alexander  V. Divochiy; Yury  B. Vakhtomin; Konstantin V. Smirnov

doi:10.1117/1.JNP.9.093051

16 September 2015 Ultrafast superconducting single-photon detector with a reduced active area coupled to a tapered lensed single-mode fiber

Maria V. Sidorova, Alexander V. Divochiy, Yury B. Vakhtomin, Konstantin V. Smirnov

Author Affiliations +

Journal of Nanophotonics, Vol. 9, Issue 1, 093051 (September 2015). https://doi.org/10.1117/1.JNP.9.093051

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.

Citation Download Citation

Maria V. Sidorova, Alexander V. Divochiy, Yury B. Vakhtomin, and Konstantin V. Smirnov "Ultrafast superconducting single-photon detector with a reduced active area coupled to a tapered lensed single-mode fiber," Journal of Nanophotonics 9(1), 093051 (16 September 2015). https://doi.org/10.1117/1.JNP.9.093051

Published: 16 September 2015

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