%T Rectifying fluctuations in an optical lattice
%L discovery9658
%J PHYS REV LETT
%N 7
%V 93
%A PH Jones
%A M Goonasekera
%A F Renzoni
%K STOCHASTIC RESONANCE, BROWNIAN MOTORS, THERMAL RATCHETS, DRIVEN SYSTEMS, RECTIFICATION, DIFFUSION, TRANSPORT, SYMMETRY, SQUIDS, ATOMS
%X We have realized a Brownian motor by using cold atoms in a dissipative optical lattice as a model system. In our experiment the optical potential is spatially symmetric and the time symmetry of the system is broken by applying appropriate zero-mean ac forces. We identify a regime of rectification of forces and a regime of rectification of fluctuations, the latter corresponding to the realization of a Brownian motor.
%D 2004
%P ? - ?
%I AMERICAN PHYSICAL SOC