2000/06/23 by J. Ringot, Jean Ringot, Pascal Szriftgiser +3 · 7 citations
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Nonlinear Dynamics and Pattern Formation #Quantum chaos and dynamical systems #physics.atom-ph
paper · pdf · doi:10.1103/physrevlett.85.2741
published as Physical Review Letters 85, 2741 (2000) · 4 pages, 4 figures, LaxTex2e and RevTeX style, postscript-formatted figures
arxiv created 2000/06/23 · openalex publication_date 2000/09/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper presents the first experimental evidence of the transition from dynamical localization to delocalization under the influence of a quasiperiodic driving on a quantum system. A quantum kicked rotator is realized by placing cold atoms in a pulsed, far-detuned, standing wave. If the standing wave is periodically pulsed, one observes the suppression of the classical chaotic diffusion, i.e., dynamical localization. If the standing wave is pulsed quasiperiodically, dynamical localization is observed or not, depending on the driving frequencies being commensurable or incommensurable. One can thus study the transition from the localized to the delocalized case as a function of the effective dimensionality of the system.