The role of thermal and non-Gaussian noise on the dynamics of driven short overdamped Josephson junctions is studied. The mean escape time of the junction is investigated considering Gaussian, Cauchy-Lorentz and Lévy-Smirnov probability distributions of the noise signals. In these conditions we find resonant activation and the first evidence of noise enhanced stability in a metastable system in the presence of Lévy noise. For Cauchy-Lorentz noise source, trapping phenomena and power law dependence on the noise intensity are observed.
Augello, G., Valenti, D., Spagnolo, B. (2010). Non-Gaussian noise effects in the dynamics of a short overdamped Josephson junction. THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, 78, 225-234 [10.1140/epjb/e2010-10106-1].
Non-Gaussian noise effects in the dynamics of a short overdamped Josephson junction
AUGELLO, Giuseppe;VALENTI, Davide;SPAGNOLO, Bernardo
2010-01-01
Abstract
The role of thermal and non-Gaussian noise on the dynamics of driven short overdamped Josephson junctions is studied. The mean escape time of the junction is investigated considering Gaussian, Cauchy-Lorentz and Lévy-Smirnov probability distributions of the noise signals. In these conditions we find resonant activation and the first evidence of noise enhanced stability in a metastable system in the presence of Lévy noise. For Cauchy-Lorentz noise source, trapping phenomena and power law dependence on the noise intensity are observed.
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