Investigating the impact of fast count rates on timing jitter in SNSPDs

Timothy M. Rambo; Jeremy Doredla; Hudson Jones; Leo Oshiro; Stephanie Boyd; Aaron J. Miller

doi:10.1117/12.2670353

6 June 2023 Investigating the impact of fast count rates on timing jitter in SNSPDs

Timothy M. Rambo, Jeremy Doredla, Hudson Jones, Leo Oshiro, Stephanie Boyd, Aaron J. Miller

Proceedings Volume 12570, Quantum Optics and Photon Counting 2023; 125700A (2023) https://doi.org/10.1117/12.2670353
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

High count rates (10’s to 100’s to 1000’s of MHz) and very precise timing (10’s of ps FWHM jitter or less) are two of the features which make superconducting nanowire single-photon detectors a revolutionary experimental and engineering tool. Both of these performance metrics also depend on the device bias current level. The maximum count rate is determined by how soon after detection the bias current recharges to the level required for maximum efficiency, while the timing jitter decreases with increased bias current even beyond level which yields maximum efficiency. For a device with a strong detection efficiency plateau, the bias current recharge can push the device into the regime of maximum efficiency at a fractional level of the current required to achieve the desired jitter. Here, we present an experimental analysis of this effect. These results should enable users to consider the trade-off between count rate and timing jitter for various experiments.

Conference Presentation

Citation Download Citation

Timothy M. Rambo, Jeremy Doredla, Hudson Jones, Leo Oshiro, Stephanie Boyd, and Aaron J. Miller "Investigating the impact of fast count rates on timing jitter in SNSPDs", Proc. SPIE 12570, Quantum Optics and Photon Counting 2023, 125700A (6 June 2023); https://doi.org/10.1117/12.2670353

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