Summary
Amongst the many unique properties of chaos, the discovery of chaos synchronization has become a cornerstone in the understanding of nonlinear dynamical systems. While identical synchronization of mechanical structures has been demonstrated numerically in different configurations, very few investigations tackled experimental realizations due to the extreme sensitivity to parameter mismatch between the two synchronized systems. We present here an experimental demonstration of identical synchronization between two distinct chaotic micromechanical resonators exploiting dynamical bistability. Uncoupled, the two strange attractors are highly correlated while the time evolution of their dynamics are uncorrelated. When the two microresonators are synchronized in a master-slave configuration, their dynamics evolves within a standard deviation below 2%. Such a high quality of chaos synchronization between two distant structures paves the way towards micromechanical-based chaos applications, such as chaotic cryptography.
