1 research outputs found
Influence of noise on Josephson junctions dynamics with a BCS theory-based model
We developed a weak-linked Josephson junction time-domain simulation tool
based on the Bardeen-Cooper-Schrieffer (BCS) theory to account for the
electrodynamics of Cooper pairs and quasiparticles in the presence of thermal
noise. The model, based on Werthamer and Harris formalisms, allows us to
describe the behavior of Josephson junctions for various current and/or voltage
input waveforms, analog or digital, and for any operating temperature below the
critical temperature of the superconducting materials. We show a good agreement
between experimental and simulated IV curves of Josephson junctions, as well as
a relative increase of the grey zone width of an SFQ balanced comparator
between 4 and 20% due to the presence of quasiparticles, for McCumber
parameters comprised between 0.1 and 1, respectively.Comment: Presented at the European Conference on Applied Superconductivity
(EUCAS 2023), Bologna, Italy, 03-07 September 2023. 5 pages, 6 figures, 21
reference