title: Quantum scaling laws in the onset of dynamical delocalization.
abstract: We study the destruction of dynamical localization experimentally observed in an atomic realization of the kicked rotor by a deterministic Hamiltonian perturbation, with a temporal periodicity incommensurate with the principal driving. We show that the destruction is gradual, with well-defined scaling laws for the various classical and quantum parameters, in sharp contrast to predictions based on the analogy with Anderson localization.
authors.affiliation: Laboratoire de Physique des Lasers, Atomes et Molécules, Université des Sciences et Technologies de Lille, Centre d'Etudes et Recherches Lasers et Applications, F-59655 Villeneuve d'Ascq Cedex, France.
authors.forename: Julien
authors.initials: J
authors.lastname: Chabé
authors.forename: Hans
authors.initials: H
authors.lastname: Lignier
authors.forename: Hugo
authors.initials: H
authors.lastname: Cavalcante
authors.forename: Dominique
authors.initials: D
authors.lastname: Delande
authors.forename: Pascal
authors.initials: P
authors.lastname: Szriftgiser
authors.forename: Jean Claude
authors.initials: JC
authors.lastname: Garreau