Abstract

The Out-Of-Equilibrium Dynamics Of Finite Ultracold Bosonic Ensembles In Periodically Driven One-Dimensional Optical Lattices Is Investigated. Our Study Reveals That The Driving Enforces The Bosons In Different Wells To Oscillate In-Phase And To Exhibit A Dipole-Like Mode. A Wide Range From Weak-To-Strong Driving Frequencies Is Covered And A Resonance-Like Behavior Of The Intra-Well Dynamics Is Discussed. In The Proximity Of The Resonance A Rich Intraband Excitation Spectrum Is Observed. The Single Particle Excitation Mechanisms Are Studied In The Framework Of Floquet Theory Elucidating The Role Of The Driving Frequency. The Impact Of The Interatomic Repulsive Interactions Is Examined In Detail Yielding A Strong Influence On The Tunneling Period And The Excitation Probabilities. Finally, The Dependence Of The Resonance Upon A Variation Of The Tunable Parameters Of The Optical Lattice Is Examined. Our Analysis Is Based On The Ab Initio Multi-Configuration Time-Dependent Hartree Method For Bosons.

Department(s)

Physics

Keywords and Phrases

nonequilibrium quantum dynamics; periodic driving; ultracold atoms

International Standard Serial Number (ISSN)

1361-6455; 0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 IOP Publishing, All rights reserved.

Publication Date

03 Nov 2015

Included in

Physics Commons

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