Matter-wave localization in disordered cold atom lattices

Phys Rev Lett. 2005 Jul 8;95(2):020401. doi: 10.1103/PhysRevLett.95.020401. Epub 2005 Jul 5.


We propose to observe Anderson localization of ultracold atoms in the presence of a random potential made of atoms of another species or spin state and trapped at the nodes of an optical lattice, with a filling factor less than unity. Such systems enable a nearly perfect experimental control of the disorder, while the possibility of modeling the scattering potentials by a set of pointlike ones allows an exact theoretical analysis. This is illustrated by a detailed analysis of the one-dimensional case.