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Resonant activation in a nonadiabatically driven optical lattice
R. Gommers, P. Douglas, S. Bergamini +3
We demonstrate the phenomenon of resonant activation in a non-adiabatically driven dissipative optical lattice with broken time-symmetry. The resonant activation results in a reson…
Rectifying fluctuations in an optical lattice
P. H. Jones, M. Goonasekera, F. Renzoni
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 tim…
Asymmetric diffusion in the delta-kicked rotor with broken symmetries
P. H. Jones, M. Goonasekera, H. E. Saunders-Singer +2
We report an experimental investigation of momentum diffusion in the delta-function kicked rotor where time symmetry is broken by a two-period kicking cycle and spatial symmetry by…