Controlled generation of coherent matter currents using a periodic driving field
We study the effect of a strong, oscillating driving field on the dynamics of ultracold boson held in an optical lattice. Modeling the system as a Bose-Hubbard model, we show how the driving field can be used to produce and maintain a coherent atomic current by controlling the phase of the intersite...
| Autores: | , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2008 |
| País: | España |
| Recursos: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/51561 |
| Acesso em linha: | https://hdl.handle.net/20.500.14352/51561 |
| Access Level: | acceso abierto |
| Palavra-chave: | 538.9 Optical lattices Atoms Física de materiales Física del estado sólido 2211 Física del Estado Sólido |
| Resumo: | We study the effect of a strong, oscillating driving field on the dynamics of ultracold boson held in an optical lattice. Modeling the system as a Bose-Hubbard model, we show how the driving field can be used to produce and maintain a coherent atomic current by controlling the phase of the intersite tunneling processes. We investigate both the stroboscopic and time- averaged behavior using Floquet theory, and demonstrate that this procedure provides a stable and precise method of controlling coherent quantum systems. |
|---|