@article {bar-gillsignatures2006, title = {Signatures of strong momentum localization via entanglement of translational and internal states.}, journal = {Physical review letters}, volume = {97}, year = {2006}, abstract = {We show that atoms or molecules subject to fields that couple their internal and translational (momentum) states may undergo a crossover from randomization (diffusion) to strong localization (sharpening) of their momentum distribution. The predicted crossover should be manifest by a drastic change of the interference pattern as a function of the coupling fields.}, author = {Nir Bar-Gill and Gershon Kurizki} }