TY - JOUR SP - ? Y1 - 2004/08/13/ AV - public ID - discovery9658 SN - 0031-9007 UR - https://discovery.ucl.ac.uk/id/eprint/9658/ JF - PHYS REV LETT PB - AMERICAN PHYSICAL SOC N2 - 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. KW - STOCHASTIC RESONANCE KW - BROWNIAN MOTORS KW - THERMAL RATCHETS KW - DRIVEN SYSTEMS KW - RECTIFICATION KW - DIFFUSION KW - TRANSPORT KW - SYMMETRY KW - SQUIDS KW - ATOMS VL - 93 IS - 7 TI - Rectifying fluctuations in an optical lattice A1 - Jones, PH A1 - Goonasekera, M A1 - Renzoni, F EP - ? ER -