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Expansion of matter waves in static and driven periodic potentials

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Creffield, Charles E. y Sols Lucía, Fernando y Ciampini, D. y Morsch, O. y Arimondo, E. (2014) Expansion of matter waves in static and driven periodic potentials. Physical review A, 86 (1). ISSN 1050-2947

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URL Oficial: http://dx.doi.org/10.1103/PhysRevA.82.035601


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Resumen

We study the nonequilibrium dynamics of cold atoms held in an optical lattice subjected to a periodic driving potential. The expansion of an initially confined atom cloud occurs in two phases: an initial quadratic expansion followed by a ballistic behavior at long times. Accounting for this gives a good description of recent experimental results and provides a robust method to extract the effective intersite tunneling from time-of-flight measurements.


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©2010 The American Physical Society.
This research was supported by the Acción Integrada/ Azioni Integrate scheme (Spain/Italy). The authors also acknowledge support from the Spanish MICINN through Grant No. FIS-2007-65723 and the Ramón y Cajal program (CEC).We thank H. Lignier, C. Sias,Y. Singh, and A. Zenesini for assistance with the experiments.

Palabras clave:Localization
Materias:Ciencias > Física > Física de materiales
Ciencias > Física > Física del estado sólido
Código ID:32947
Depositado:31 Aug 2015 10:30
Última Modificación:31 Aug 2015 10:30

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