Anderson localization of matter waves in tailored disordered potentials
  We show that, in contrast to immediate intuition, Anderson localization of noninteracting particles induced by a disordered potential in free space can increase (i.e., the localization length can decrease) when the particle energy increases, for appropriately tailored disorder correlations. We predict the effect in one, two, and three dimensions, and propose a simple method to observe it using ultracold atoms placed in optical disorder. The increase of localization with the particle energy can serve to discriminate quantum versus classical localization. 
Marie Piraud, Alain Aspect and Laurent Sanchez-Palencia
cond-mat.quant-gas cond-mat.dis-nn quant-ph