# High Frequency Stochastic Resonance in Periodically Driven Systems

Dykman, M. I. and Luchinsky, D. G. and Mannella, R. and McClintock, P. V. E. and Soskin, S. M. and Stein, N. D. and Stocks, N. G. (1993) High Frequency Stochastic Resonance in Periodically Driven Systems. arXiv .

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## Abstract

SUMMARY High frequency stochastic resonance (SR) phenomena, associated with fluctuational transitions between coexisting periodic attractors, have been investigated experimentally in an electronic model of a single-well Duffing oscillator bistable in a nearly resonant field of frequency $\omega_F$. It is shown that, with increasing noise intensity, the signal/noise ratio (SNR) for a signal due to a weak trial force of frequency $\Omega \sim \omega_F$ at first decreases, then {\it increases}, and finally decreases again at higher noise intensities: behaviour similar to that observed previously for conventional (low frequency) SR in systems with static bistable potentials. The stochastic enhancement of the SNR of an additional signal at the mirror-reflected frequency $\vert \Omega - 2 \omega_F \vert$ is also observed, in accordance with theoretical predictions. Relationships with phenomena in nonlinear optics are discussed.

Item Type: Article Imported from arXiv Imported from arXiv Area02 - Scienze fisiche > FIS/03 - Fisica della materia Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA dott.ssa Sandra Faita 06 Aug 2013 12:37 10 Sep 2013 17:26 http://eprints.adm.unipi.it/id/eprint/1462

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