Phase dynamics of tunnel Al-based ferromagnetic Josephson junctions
Applied Physics Letters(2024)
摘要
By measuring the current-voltage characteristics and the switching current
distributions as a function of temperature, we have investigated the phase
dynamics of Al tunnel ferromagnetic Josephson junctions (JJs), designed to fall
in the typical range of parameters of state-of-the-art transmons, providing
evidence of phase diffusion processes. The comparison with the experimental
outcomes on non-magnetic JJs with nominally the same electrodynamical
parameters demonstrates that the introduction of ferromagnetic barriers does
not cause any sizeable detrimental effect, and supports the notion of including
tunnel ferromagnetic JJs in qubit architectures.
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