Dresden 2011 – scientific programme

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A: Fachverband Atomphysik

A 13: Poster II

A 13.3: Poster

Tuesday, March 15, 2011, 18:00–20:00, P1

Chromium Bose-Einstein condensates in multi-well potentials — •Juliette Billy, Stefan Müller, Emanuel Henn, Holger Kadau, Philipp Weinmann, David Peter, and Tilman Pfau — 5. Physikalisches Institut, Universität Stuttgart

To probe the long-range anisotropic dipolar interaction (DI) in chromium Bose-Einstein condensates (BECs), we aim to extend the geometry-dependent stability diagram of dipolar BECs [1] to highly oblate traps. Experimentally we slice a condensate into several pancake shaped clouds using a 1D optical lattice and investigate the stability of the system, comparing it to theoretical calculations. Our results support significant coupling between neighboring layers through the DI. For further investigating this coupling, we plan a second experiment to study the minimal system consisting of a dipolar BEC trapped in a triple-well potential [2]. The experimental realization of such a system implies major upgrades of our apparatus, which we detail here.

[1] T. Koch et al., Nature Physics 4, 218 (2008)

[2] T. Lahaye et al., Phys. Rev. Lett. 104, 170404 (2010)