Journal
EUROPHYSICS LETTERS
Volume 68, Issue 6, Pages 783-789Publisher
EDP SCIENCES S A
DOI: 10.1209/epl/i2004-10287-1
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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.
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