@Article{Vodolazov_etal2020,
author="Vodolazov, D. Y.
and Manova, N. N.
and Korneeva, Y. P.
and Korneev, A. A.",
title="Timing jitter in NbN superconducting microstrip single-photon detector",
journal="Phys. Rev. Applied",
year="2020",
volume="14",
number="4",
pages="044041 (1 to 8)",
optkeywords="NbN SSPD; SNSPD",
abstract="We experimentally study timing jitter of single-photon detection by NbN superconducting strips with width w ranging from 190 nm to 3$\mu$m. We find that timing jitter of both narrow (190 nm) and micron-wide strips is about 40 ps at currents where internal detection efficiency $\eta$ saturates and it is close to our instrumental jitter. We also calculate intrinsic timing jitter in wide strips using the modified time-dependent Ginzburg-Landau equation coupled with a two-temperature model. We find that with increasing width the intrinsic timing jitter increases and the effect is most considerable at currents where a rapid growth of $\eta$ changes to saturation. We relate it with complicated vortex and antivortex dynamics, which depends on a photon{\textquoteright}s absorption site across the strip and its width. The model also predicts that at current close to depairing current the intrinsic timing jitter of a wide strip could be about ℏ/kBTc (Tc is a critical temperature of superconductor), i.e., the same as for a narrow strip.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1788), last updated on Tue, 01 Jun 2021 21:03:24 -0500",
issn="2331-7019",
doi="10.1103/PhysRevApplied.14.044041",
opturl="https://link.aps.org/doi/10.1103/PhysRevApplied.14.044041",
opturl="https://doi.org/10.1103/PhysRevApplied.14.044041"
}