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The underdamped Josephson junction subjected to colored noises

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  • L. R. Nie
  • D. C. Mei

Abstract

The properties of the underdamped Josephson junction subjected to colored noises were investigated with large and small phase difference (φ). For the case of the large φ, we found numerically that: (i) the probability distribution function of φ exhibits monostability → bistability → monostability transitions as the autocorrelation rate (λ) of a colored noise increases; (ii) in the bistability region the multiplicative noise drives the phase difference to turn over periodically; (iii) the slope K of the linear response of the junction potential difference (〈V 〉) can be somewhat reduced by means of tuning an optimal λ; (iv) the amplitude of φ in response to external sinusoidal signals changes with λ. For the case of small φ, after deriving the analytical expressions of the potential difference amplitude (〈V 〉 max ) and the K in the presence of a dichotomous noise, we found nonmonotonic behavior of 〈V 〉 max and the slope K as a function of λ. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Suggested Citation

  • L. R. Nie & D. C. Mei, 2007. "The underdamped Josephson junction subjected to colored noises," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 58(4), pages 475-481, August.
    • Handle: RePEc:spr:eurphb:v:58:y:2007:i:4:p:475-481
    DOI: 10.1140/epjb/e2007-00240-2
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    Cited by:

    1. Jin, Yanfei & Wang, Heqiang, 2020. "Noise-induced dynamics in a Josephson junction driven by trichotomous noises," Chaos, Solitons & Fractals, Elsevier, vol. 133(C).

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