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RESEARCH PRODUCT
Suppression of timing errors in short overdamped Josephson junctions
Bernardo SpagnoloAndrey L. Pankratovsubject
PhysicsJosephson effectSuperconductivityFluctuation phenomena random processes noise and Brownian motionStatistical Mechanics (cond-mat.stat-mech)Numerical analysisCondensed Matter - SuperconductivityGeneral Physics and AstronomyFOS: Physical sciencesStatistical mechanicsFunction (mathematics)Standard deviationSwitching timeSuperconductivity (cond-mat.supr-con)Range (statistics)Statistical physicsStochastic analysis methods Fokker-Planck equation Langevin equationCondensed Matter - Statistical MechanicsSuperconducting devicedescription
The influence of fluctuations and periodical driving on temporal characteristics of short overdamped Josephson junction is analyzed. We obtain the standard deviation of the switching time in the presence of a dichotomous driving force for arbitrary noise intensity and in the frequency range of practical interest. For sinusoidal driving the resonant activation effect has been observed. The mean switching time and its standard deviation have a minimum as a function of driving frequency. As a consequence the optimization of the system for fast operation will simultaneously lead to minimization of timing errors.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-01-01 |