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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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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
Additional Information: Imported from arXiv
Uncontrolled Keywords: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/03 - Fisica della materia
Divisions: Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA
Depositing User: dott.ssa Sandra Faita
Date Deposited: 06 Aug 2013 12:37
Last Modified: 10 Sep 2013 17:26
URI: http://eprints.adm.unipi.it/id/eprint/1462

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