Using a cold atomic gas exposed to laser pulses—a realization of the chaotic quasiperiodic
kicked rotor with three incommensurate frequencies—we study experimentally and …

We study the quantum version of a tilting and flashing Hamiltonian ratchet, consisting of a
periodic potential and a time-periodic driving field. The system dynamics is governed by a …

Quantum resonances in the kicked rotor are characterized by a dramatically increased
energy absorption rate, in stark contrast to the momentum localization generally observed …

Quantum systems lose coherence upon interaction with the environment and tend towards
classical states. Quantum coherence is known to exponentially decay in time so that …

We realize experimentally a cold-atom system, the quasiperiodic kicked rotor, equivalent to
the three-dimensional Anderson model of disordered solids where the anisotropy between …

We study dynamical localization in an ultracold atom confined in an optical lattice that is
simultaneously shaken by two competing pulsatile modulations with different amplitudes …

Dynamical localization is a localization phenomenon taking place, for example, in the
quantum periodically driven kicked rotor. It is due to subtle quantum destructive …

We present experimental measurements of the mean energy in the vicinity of the first and
second quantum resonances of the atom-optics kicked rotor for a number of different …

We show that a scaling law exists for the near-resonant dynamics of cold kicked atoms in the
presence of a randomly fluctuating pulse amplitude. Analysis of a quasiclassical phase …

We discuss a general useful theoretical framework to study dynamical localization in
ultracold atomic systems confined in periodically shaken optical lattices. Our theory allows to …