6533b86efe1ef96bd12cb594
RESEARCH PRODUCT
RESONANT ACTIVATION AND NOISE ENHANCED STABILITY IN JOSEPHSON JUNCTIONS
Andrey L. PankratovBernardo Spagnolosubject
PhysicsJosephson effectJosephson phaseCondensed matter physicsRSFQ CIRCUITSJosephson energyESCAPEBARRIERTIMESStability (probability)FLUCTUATING POTENTIALSPi Josephson junctionSTATESSuperconducting tunnel junctionNoise (radio)description
We investigate the interplay of two noise-induced effects on the temporal characteristics of short overdamped Josephson junctions in the presence of a periodic driving. We find that: (i) the mean life time of superconductive state has a minimum as a function of driving frequency, and near the minimum it actually does not depend on the noise intensity (resonant activation phenomenon); (ii) the noise enhanced stability phenomenon increases the switching time from superconductive to the resistive state. As a consequence there is a suitable frequency range of clock pulses, at which the noise has a minimal effect on pulse propagation in RSFQ electronic devices.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-09-01 | Complexity, Metastability and Nonextensivity |