Darmstadt 2008 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Quantengase (Gitter I)

Q 15.3: Vortrag

Dienstag, 11. März 2008, 14:30–14:45, 1C

Bloch oscillations and Landau-Zener tunneling of interacting ultracold atoms — •Ghazal Tayebirad and Sandro Wimberger — Institut für Theoretische Physik, Universität Heidelberg, D-69120 Heidelberg

A series of recent experiments measured the impact of atom-atom interactions on Bloch oscillations [1,2] and on Landau-Zener interband tunneling [3] of ultracold atoms in a tilted periodic (washboard) potential. We investigate the effect of interactions in the mean-field regime on these dynamical processes. Moreover, we discuss possibilities of controlling quantum transport in the interacting Wannier-Stark system by time-dependent and spatially inhomogeneous potentials.
[1] M. Fattori et al., arXiv:0710.5031.

[2] M. Gustavsson et al., arXiv:0710.5083.

[3] C. Sias et al., Phys. Rev. Lett. 98, 120403 (2007).