Dresden 2011 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 26: Poster III

A 26.73: Poster

Donnerstag, 17. März 2011, 16:00–18:30, P2

Ab-initio time-dependent investigation of two ultracold atoms in optical lattices — •Philipp-Immanuel Schneider and Alejandro Saenz — AG Moderne Optik, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin

Ultracold atoms in optical lattices and superlattices are good candidates for performing quantum information processing but also for studying fundamental phenomena such as quantum entanglement and transport. We are developing an ab-initio approach to solve the full time-dependent Schrödinger equation for two interacting atoms in two or three wells of a 3-dimensional optical lattice. We allow for various time-dependent perturbations of the lattice that correspond, e.g., to a shaking of the lattice or the lowering of the barrier between two lattice sites. Furthermore, the atoms can interact via realistic Born-Oppenheimer potentials or one can simulate the appearance of broad and narrow Feshbach resonances. We are going to present the numerical approach and first studies of several time-dependent processes.