2011/05/03 by Dario Poletti, Corinna Kollath · 51 citations
Physics and Astronomy · #Amplitude #Atomic physics #Boson #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Ground state #Hamiltonian (control theory) #Optical lattice #Physics #Quantum #Quantum dynamics #Quantum many-body systems #Quantum mechanics #Quantum tunnelling #Strong Light-Matter Interactions #Superfluidity #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1103/physreva.84.013615
published in Physical Review A 84(1) (American Physical Society) · 10 pages, 8 figures
arxiv created 2011/05/03 · openalex publication_date 2011/07/22 · arxiv updated 2015/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the evolution of bosons in a periodically driven optical lattice during a slow change of the driving amplitude. Both the regime of high-frequency and low-frequency driving are investigated. In the low-frequency regime, resonant absorption of energy is observed. In the high-frequency regime, the dynamics is compared to a system with an effective Hamiltonian in which the atoms are ``dressed'' by the driving field. This ``dressing'' can dramatically change the amplitude and sign of the effective tunneling. A particular focus of this study is the investigation of the time scales necessary for the evolving quantum state to follow almost adiabatically to the ground state of the effective many-body system.