Journal
PHYSICAL REVIEW LETTERS
Volume 84, Issue 14, Pages 3025-3028Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.3025
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We experimentally investigate the escape from a metastable state over a fluctuating barrier of a physical system. The system is switching between two states under electronic control of a dichotomous noise. We measure the escape time and its probability density function as a function of the correlation rate of the dichotomous noise in a frequency interval spanning more than four frequency decades. We observe resonant activation, namely a minimum of the average escape time as a function of the correlation rate. We detect two regimes in the study of the shape of the escape time probability distribution: (i) a regime of exponential and (ii) a regime of nonexponential probability distribution.
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