Asymmetric confinement in a noisy bistable device
Abstract
A Brownian particle hopping in a symmetric doublewell 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.
 Publication:

EPL (Europhysics Letters)
 Pub Date:
 December 2004
 DOI:
 10.1209/epl/i2004102871
 Bibcode:
 2004EL.....68..783B