Dynamical localization of interacting ultracold atomic kicked rotors

We study a system of two atomic quantum kicked rotors with hard-core interaction. This system shows different dynamical behavior depending on the value of the kick period. In particular, we find that for periods close to resonance, the system shows a crossover from quantum resonance to dynamical localization. We characterize this crossover by the analysis of momenta distribution and density probability function in the configuration space, and discuss the role of the hard-core interaction on the dynamical localization by comparing it to the free-bosons case. In particular we note that dynamical localization of the center of mass persists even in the presence of strong interaction among the atoms. Some experimental proposals are also discussed.