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Proceedings Paper

Stochastic resonance in coupled systems
Author(s): Dusan Babic; Carmen Schmitt; Clemens Bechinger
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Paper Abstract

We present experimental results on two colloidal systems showing features of stochastic resonance. The first one is a generic and the most simple case of a single overdamped colloidal particle in a double-well potential created by laser tweezers. For appropriate modulation of the potential stochastic resonance is unambiguously demonstrated. The second system is composed of many coupled particles controlled by laser tweezers constituting a ratchet cellular automaton. The ratchet was used as a transmission line for defects and was operated in a non-deterministic mode. Our results demonstrate that the transmission is optimal at a well defined noise level which is one of the characteristics of stochastic resonance.

Paper Details

Date Published: 18 October 2004
PDF: 10 pages
Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); doi: 10.1117/12.555985
Show Author Affiliations
Dusan Babic, Univ. Stuttgart (Germany)
Univ. of Ljubljana (Slovenia)
Carmen Schmitt, Univ. Stuttgart (Germany)
Clemens Bechinger, Univ. Stuttgart (Germany)


Published in SPIE Proceedings Vol. 5514:
Optical Trapping and Optical Micromanipulation
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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