Effects of colored noise in short overdamped Josephson junction

TL;DR

This paper studies how colored noise affects the transient dynamics of a short overdamped Josephson junction, revealing that noise correlation time influences phenomena like resonant activation and noise enhanced stability.

Contribution

It introduces an analysis of colored noise effects on Josephson junction dynamics, highlighting the dependence of noise-induced phenomena on noise correlation time.

Findings

RA minimum and NES maximum depend on noise correlation time

Mean switching time shows non-monotonic behavior with tau_c

Resonant activation and noise enhanced stability are observed

Abstract

We investigate the transient dynamics of a short overdamped Josephson junction with a periodic driving signal in the presence of colored noise. We analyze noise induced henomena, specifically resonant activation and noise enhanced stability. We find that the positions both of the minimum of RA and maximum of NES depend on the value of the noise correlation time tau_c. Moreover, in the range where RA is observed, we find a non-monotonic behavior of the mean switching time as a function of the correlation time tau_c.