Interactions destroy dynamical localization with strong and weak chaos

Abstract

Bose-Einstein condensates loaded into kicked optical lattices can be treated as quantum kicked rotor systems. Noninteracting rotors show dynamical localization in momentum space. The experimentally tunable condensate interaction is included in a qualitative Gross-Pitaevskii type model based on two-body interactions. We observe strong and weak chaos regimes of wave packet spreading in momentum space. In the intermediate strong chaos regime the condensate energy grows as $t^{1/2}$. In the asymptotic weak chaos case the growth crosses over into a $t^{1/3}$ law. The results do not depend on the details of the kicking.

6 pages, 3 figures, submitted to Europhys. Lett

References in corpus (10)

• Absence of Wavepacket Diffusion in Disordered Nonlinear Systems
• Between a metal and an insulator: the critical state of the Anderson transition
• Observation of the Anderson Metal-Insulator Transition with Atomic Matter Waves: Theory and Experiment
• The crossover from strong to weak chaos for nonlinear waves in disordered systems
• Delocalization induced by nonlinearity in systems with disorder
• Exploring the phase space of the quantum delta kicked accelerator
• Spreading of waves in nonlinear disordered media
• Nonlinear waves in disordered chains: probing the limits of chaos and spreading
• Statistics of wave interactions in nonlinear disordered systems
• Delocalized and Resonant Quantum Transport in Nonlinear Generalizations of the Kicked Rotor Model

Cited by in corpus (26)

• Universal Nonlinear Disordered Wave Packet Subdiffusion: 12 Decades
• From localization to anomalous diffusion in the dynamics of coupled kicked rotors
• Interaction-driven breakdown of dynamical localization in a kicked quantum gas
• Dynamical Localization of Coupled Relativistic Kicked Rotors
• Quantum simulation of disordered systems with cold atoms
• Many-Body Dynamical Localization in a Kicked Lieb-Liniger Gas
• Dynamics of the mean-field interacting quantum kicked rotor
• Effective thermalization of a many-body dynamically localized Bose gas
• Slow heating in a quantum coupled kicked rotors system
• Dynamical localization of interacting bosons in the few-body limit
• Nonlinear Lattice Waves in Random Potentials
• Chaos and subdiffusion in the infinite-range coupled quantum kicked rotors
• Barrier induced chaos in kicked rotor : classical sub-diffusion and quantum localization
• Kolmogorov turbulence, Anderson localization and KAM integrability
• Bogoliubov excitations in the quasiperiodic kicked rotor: stability of a kicked condensate and the quasi-insulator-metal transition
• Interaction effects on dynamical localization in driven helium
• Make Slow Fast -- how to speed up interacting disordered matter
• Dynamical many-body delocalization transition of a Tonks gas in a quasi-periodic driving potential
• Prethermalization and wave condensation in a nonlinear disordered Floquet system
• Classical Drift in the Arnold Web Induces Quantum Delocalization Transition
• Chaos and localized phases in a two-body linear kicked rotor system
• Subdiffusion in wave packets with periodically kicked interactions
• Low-energy prethermal phase and crossover to thermalization in nonlinear kicked rotors
• Interaction induced Anderson transition in a kicked one dimensional Bose gas
• Protecting Quantum Information via Many-Body Dynamical Localization
• Superfluidity vs prethermalisation in a nonlinear Floquet system