Hannover 2010 – scientific programme
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A: Fachverband Atomphysik
A 23: Poster II
A 23.56: Poster
Thursday, March 11, 2010, 16:30–19:00, Lichthof
Controlled Charge Transport in lattice confined Alkaline-Earth Gases — •Rick Mukherjee1, Igor Lesanovsky2, Alexander Eisfeld1, and Thomas Pohl1 — 1Max-Planck-Institute for the Physics of Complex systems, Noethnitzer Str. 38, D-01187 Dresden, Germany — 2School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham NG7 2RD, UK
We study the dynamics of an ion immersed in an optical lattice of ultracold atoms. Optical dressing to Rydberg states is shown to permit precise and detailed control of charge exchange between neighboring lattice sites, thereby offering unique opportunities to steer coherent charge transport and implement, e.g. a range Holstein-Hubbard type Hamiltonians in optical lattices.
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. Our results show that the proposed scheme can be realized in ultracold Strontium lattices, as currently studied in several laboratories.