title: Quantum diffusion dynamics in nonlinear systems: a modified kicked-rotor model.
abstract: Using a simple method analogous to a quantum rephasing technique, a simple modification to a paradigm of classical and quantum chaos is proposed. The interesting quantum maps thus obtained display remarkably rich quantum dynamics. Emphasis is placed on the destruction of dynamical localization without breaking periodicity, unbounded quantum anomalous diffusion in integrable systems, and transient dynamical localization. Experimental realizations of this work are also discussed.
authors.affiliation: Department of Physics and Centre of Computational Science and Engineering, National University of Singapore, 117542, Singapore.
authors.forename: Jiangbin
authors.initials: J
authors.lastname: Gong
authors.forename: Jiao
authors.initials: J
authors.lastname: Wang