Timing jitter in photon detection by straight superconducting nanowires: Effect of magnetic field and photon flux
Name
PhysRevB.98.134504.pdf
Size
2.55 MB
Format
Adobe PDF
Checksum (MD5)
3490946e19c2c1e9b8ad958e52d3d89c
Author(s)
Sidorova, Mariia
Semenov, Alexej
Hübers, Heinz-Wilhelm
Kuzmin, Artem
Doerner, Steffen
Ilin, K.
Siegel, Michael
Vodolazov, Denis
Charaev, Ilya
Date Issued
October 2018
Journal
Physical Review B
Publisher
American Physical Society
Citation
Sidorova, Mariia et al. "Timing jitter in photon detection by straight superconducting nanowires: Effect of magnetic field and photon flux." Physical Review B 98, 13 (October 2018): 134504 © 2018 American Physical Society
Version
Final published version
Abstract
We studied the effects of the external magnetic field and photon flux on timing jitter in photon detection by straight superconducting NbN nanowires. At two wavelengths 800 and 1560 nm, statistical distribution in the appearance times of photon counts exhibits Gaussian shape at small times and an exponential tail at large times. The characteristic exponential time is larger for photons with smaller energy and increases with external magnetic field while variations in the Gaussian part of the distribution are less pronounced. Increasing photon flux drives the nanowire from the discrete quantum detection regime to the uniform bolometric regime that averages out fluctuations of the total number of nonequilibrium electrons created by the photon and drastically reduces jitter. The difference between standard deviations of Gaussian parts of distributions for these two regimes provides the measure for the strength of electron-number fluctuations; it increases with the photon energy. We show that the two-dimensional hot-spot detection model explains qualitatively the effect of magnetic field.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevB.98.134504
