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We present the first experimental realization of a ratchet cellular automaton(RCA) which has been recently suggested as an alternative approach forperforming logical operations with interacting (quasi) particles. Our study wasperformed with interacting colloidal particles which serve as a model systemfor other dissipative systems i.e. magnetic vortices on a superconductor orions in dissipative optical arrays. We demonstrate that noise can enhance theefficiency of information transport in RCA and consequently enables theiroptimal operation at finite temperatures.Comment: accepted for publication at Phys. Rew. Let

Noise-Enhanced Performance of Ratchet Cellular Automata