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A: Atomphysik

A 1: Posters Monday (Cluster, Atoms in Fields)

A 1.26: Poster

Montag, 2. April 2001, 12:30–15:00, AT3

Wannier-Stark states of a quantum particle in 2D lattices — •F. Keck, M. Glück, A. R. Kolovsky, and H. J. Korsch — Fachbereich Physik, Universität Kaiserslautern

A simple method of calculating the Wannier-Stark resonances in 2D lattices is suggested. Using this method we calculate the complex Wannier-Stark spectrum for a non-separable 2D potential realized in optical lattices and analyze its general structure. The dependence of the lifetime of Wannier-Stark states on the direction of the static field (relative to the crystallographic axis of the lattice) is briefly discussed.