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Demonstration of sub-3 ps temporal resolution with a superconducting nanowire single-photon detector

Research output: Contribution to journalJournal article

Published
  • B.A. Korzh
  • Qing-Yuan Zhao
  • J. P. Allmaras
  • S. Frasca
  • T.M. Autry
  • Eric A. Bersin
  • A.D. Beyer
  • Ryan M. Briggs
  • Alexander Kozorezov
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<mark>Journal publication date</mark>2/03/2020
<mark>Journal</mark>Nature Photonics
Volume14
Number of pages6
Pages (from-to)250–255
Publication statusPublished
Original languageEnglish

Abstract

Improvements in temporal resolution of single photon detectors enable increased data rates and transmission distances for both classical and quantum optical communication systems, higher spatial resolution in laser ranging, and observation of shorter-lived fluorophores in biomedical imaging. In recent
years, superconducting nanowire single-photon detectors (SNSPDs) have emerged as the most efficient, time-resolving single-photon counting detectors available in the near infrared, but understanding of the fundamental limits of timing resolution in these devices has been limited due to a lack investigations into the time scales involved in the detection process. We introduce an experimental technique to probe the detection latency in SNSPDs and show that the key to achieving low timing jitter is the use of materials with low latency. By using a specialised niobium nitride (NbN) SNSPD we demonstrate that the system
temporal resolution can be as good as 2.6±0.2 ps for visible wavelengths and 4.3±0.2 ps at 1550 nm.

Bibliographic note

The Author's Accepted Manuscript (the accepted version of the manuscript as submitted by the author) may only be posted 6 months after the paper is published, consistent with our self-archiving embargo. Please note that the Author’s Accepted Manuscript may not be released under a Creative Commons license. For Nature Research Terms of Reuse of archived manuscripts please see: http://www.nature.com/authors/policies/license.html#terms