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Josephson Sampler Response using a Binary Search Algorithm

Published

Author(s)

BART VAN ZEGHBROECK, Logan Howe, Pete Hopkins

Abstract

This paper presents the use of a binary search algorithm to obtain the simulated response of a superconducting Josephson junction-based sampler. In the absence of noise, this simple approach is superior to mimicking the experimental approach of using an analog feedback circuit. This binary search method is first used to obtain the response of an idealized sampler, analyzing the sampler risetime to a step input and its dependence on damping. Next, it is applied to a full sampler circuit. Finally, we present the first experimental implementation of this method. A 10%-to-90% step-input response of 5.1 ps was obtained using 8 binary search iterations which yielded a current sensitivity of 1 μA.
Proceedings Title
Proceedings of the 2023 European Conference on Applied Superconductivity published in IEEE Transactions on Applied Superconductivity
Conference Dates
September 3-7, 2023
Conference Location
Bologna, IT
Conference Title
European Conference on Applied Superconductivity

Keywords

Algorithm, Binary, Josephson, Resolution, Response, Sampler, Simulation, Superconductor, Threshold

Citation

VAN ZEGHBROECK, B. , Howe, L. and Hopkins, P. (2024), Josephson Sampler Response using a Binary Search Algorithm, Proceedings of the 2023 European Conference on Applied Superconductivity published in IEEE Transactions on Applied Superconductivity, Bologna, IT, [online], https://doi.org/10.1109/TASC.2024.3353141, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956625 (Accessed June 16, 2024)

Issues

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Created January 19, 2024, Updated February 1, 2024