Experimental observation of a periodic rotating wave in rings of unidirectionally coupled analog Lorenz oscillators

In the present work we report on the experimental observation of a recently predicted behavior of coupled chaotic Lorenz oscillators that consists in a transition to periodic rotating waves of a shorter timescale than the uncoupled system. The experiment has been performed by designing an analog circuit corresponding to Lorenz differential equations, which is then used in the construction of an array of circuits with the appropriate coupling.