Volume 86, Number 3, May 2009
|Number of page(s)||4|
|Published online||13 May 2009|
Controlling dynamical localization by waveform reshaping
Departamento de Física Aplicada, Escuela de Ingenierías Industriales, Universidad de Extremadura Apartado Postal 382, E-06071 Badajoz, Spain, EU
2 Departamento de Química and Instituto Mixto de Matemáticas CSIC-UAM-UC3M-UCM, Universidad Autónoma de Madrid - Cantoblanco, E-28049 Madrid, Spain, EU
Corresponding author: firstname.lastname@example.org
Accepted: 16 April 2009
We show that reliable control of dynamical localization (DL) in the context of generic Hamiltonians subjected to periodic fields can be achieved by solely reshaping the field waveform. This approach is discussed using an example of cold atoms moving in a phase-modulated standing light field. We explain the control mechanism on the basis of a correlation between the strength of DL and the chaotic layer width of a perturbed pendulum that effectively describes the atoms' dynamics. In particular, this approach provides a versatile mechanism for controlling the dynamics of cold atoms which is capable of experimental realization in a near future.
PACS: 05.45.Mt – Quantum chaos; semiclassical methods / 42.50.Wk – Mechanical effects of light on material media, microstructures and particles
© EPLA, 2009
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