Thermal Escape from a Metastable State in Periodically Driven Josephson Junctions
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cond-mat.other
cond-mat.supr-con
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drivingescapejosephsonjunctionssystemthermalactivatedactivation
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Resonant activation and noise-enhanced stability were observed in an underdamped real physical system, i.e., Josephson tunnel junctions. With a weak sinusoidal driving force applied, the thermal activated escape from a potential well underwent resonance-like behavior as a function of the driving frequency. The resonance also crucially depended on the initial condition of the system. Numerical simulations showed good agreement with the experimental results.
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