| Issue |
Europhys. Lett.
Volume 68, Number 6, December 2004
|
|
|---|---|---|
| Page(s) | 783 - 789 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2004-10287-1 | |
| Published online | 26 November 2004 | |
Asymmetric confinement in a noisy bistable device
1
Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare Università di Perugia - I-06123 Perugia, Italy
2
Dipartimento di Fisica, Università di Camerino - I-62032 Camerino, Italy
Received:
2
September
2004
Accepted:
22
October
2004
A Brownian particle hopping in a symmetric double-well potential can be statistically confined to a single well by the simultaneous action of a) two periodic input signals, one tilting the minima, the other one modulating the barrier height; b) an additive and a purely multiplicative random signal, generated by a unique source and thus preserving a certain degree of statistical correlation. In view of technological implementation, such a basic mechanism for asymmetric confinement can be conveniently maximized by tuning the input signal parameters (correlation time, phase/time lag, amplitudes), thus revealing a resonant localization mechanism of wide applicability.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 02.50.Ey – Stochastic processes / 82.20.-w – Chemical kinetics and dynamics
© EDP Sciences, 2004
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