期刊
PHYSICAL REVIEW A
卷 84, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.84.013615
关键词
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资金
- Triangle de la Physique, ANR (FAMOUS)
- DARPA-OLE
- Swiss National Foundation
- Fondation Ernst et Lucie Schmidheiny
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.
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