Experimental observation of extreme multistability in coupled electronic oscillators

We report the rst experimental observation of extreme multistability in a controlled laboratory investigation. Extreme multistability arises when innitely many attractors coexist for the same set of system parameters. The behavior was predicted earlier on theoretical grounds, supported by numerical studies of models of two coupled identical or nearly identical systems. We construct and couple two analog circuits based on the Lorenz system and demonstrate the occurrence of extreme multistability through the controlled switching of the coupled system to dierent attractor states