Phys. Rev. Lett. 94, 148303 (2005) [4 pages]Noise-Enhanced Performance of Ratchet Cellular AutomataReceived 8 October 2004; published 14 April 2005 We present the first experimental realization of a ratchet cellular automaton (RCA) which has recently been suggested as an alternative approach for performing logical operations with interacting (quasi)particles. Our study was performed with interacting colloidal particles which serve as a model system for other dissipative systems, i.e., magnetic vortices on a superconductor or ions in dissipative optical arrays. We demonstrate that noise can enhance the efficiency of information transport in RCA and consequently enables their optimal operation at finite temperatures. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.148303
DOI:
10.1103/PhysRevLett.94.148303
PACS:
05.40.Ca, 82.70.Dd, 89.20.Ff
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