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Synchronization of stochastic bistable systems by biperiodic systems.

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<mark>Journal publication date</mark>17/09/2007
<mark>Journal</mark>Physical Review E
Issue number3
Pages (from-to)031122
<mark>Original language</mark>English


We study the nonlinear response of a noisy bistable system to a biperiodic signal through experiments with an electronic circuit (Schmitt trigger). The signal we use is a biharmonic one, i.e., a superposition of low and high frequency harmonic components. It is shown that the mean switching frequency (MSF) of the system can be locked at both low and high frequencies. Moreover, the phenomenon of MSF locking at the lower frequency can be induced and enhanced by the higher frequency excitation. Thus high frequency bias can control synchronization at the low frequency.