Dresden 2011 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 15: Ultra-cold atoms, ions and BEC III (with Q)
A 15.7: Vortrag
Mittwoch, 16. März 2011, 12:15–12:30, BAR 106
Controlled Charge Transport in lattice confined Alkaline-Earth Gases — •Rick Mukherjee1, Alexander Eisfeld1, Igor Lesanovsky2, and Thomas Pohl1 — 1Max Planck Institute for the Physics of Complex Systems, Dresden, Germany — 2School of Physics and Astronomy, The University of Nottingham, United Kingdom
We study the dynamics of an ion immersed in an optical lattice of ultracold atoms. Here, simultaneous trapping of atoms and ions is made possible though the use of alkaline-earth atoms. Focussing on Strontium, we present extensive calculations of the atomic structure of highly excited states, as well as of the properties of molecular ions composed of such two-electron atoms. Optical dressing to Rydberg states is shown to permit precise and detailed control of charge exchange between neighbouring lattice sites, thereby offering unique opportunities to steer coherent charge transport and implement, e.g. a range Holstein-Hubbard type Hamiltonians in optical lattices.