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Condensed Matter > Superconductivity

arXiv:2411.09494 (cond-mat)
[Submitted on 14 Nov 2024]

Title:Laser-Induced Relaxation Oscillations in Superconducting Nanobridge Single Photon Detectors

Authors:F.B. Baalbergen, I.E. Zadeh, M.J.A. de Dood
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Abstract:We demonstrate novel laser-induced relaxation oscillations in superconducting nanowire single photon detectors (SNSPDs). These oscillations appear when a voltage biased NbTiN nanobridge detector is illuminated with intense pulsed laser light at a repetition rate of ~19 MHz. They differ from the well-known relaxation oscillations by a step-wise increase in frequency and phase locking of the oscillations to the laser pulses. An electrical model that does not include thermal effects can be used to simulate the observed laser-induced relaxation oscillations. Good agreement to the experiment is achieved using realistic values for the parameters in the model.
Subjects: Superconductivity (cond-mat.supr-con); Instrumentation and Detectors (physics.ins-det)
Cite as: arXiv:2411.09494 [cond-mat.supr-con]
  (or arXiv:2411.09494v1 [cond-mat.supr-con] for this version)
  https://doi.org/10.48550/arXiv.2411.09494

Submission history

From: Michiel de Dood [view email]
[v1] Thu, 14 Nov 2024 15:01:29 UTC (396 KB)
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