Controllable 3D atomic Brownian motor in optical lattices C. M. Dion, P. Sjölund, S. J.H. Petra, S. Jonsell, M. Nylén, L. Sanchez-Palencia and A. Kastberg Eur. Phys. J. Special Topics, 159 (2008) 11-17 Published online: 21 May 2008 DOI: 10.1140/epjst/e2008-00688-8