Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 35: Ultra-cold atoms, ions and BEC VII (with Q)

A 35.1: Vortrag

Donnerstag, 21. März 2013, 14:00–14:15, B 305

Magneto-optical trapping of dysprosium — •Thomas Maier, Holger Kadau, Matthias Schmitt, Michaela Nickel, Axel Griesmaier, and Tilman Pfau — 5. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

Strongly dipolar quantum gases enable the observation of many-body phenomena with anisotropic, long-range interaction. Rotonic features, 2D stable solitons and the supersolid state are some of the exotic many-body phenomena predicted for such quantum gases. Recent generation of degenerated bosonic [1] and fermionic dysprosium [2] and bosonic erbium [3], both elements with large magnetic dipole moment, are promising candidates to observe these mentioned effects.

We report on progress in our experiment to achieve degenerate dysprosium quantum gases. Dysprosium is the element with the highest magnetic moment and offers a non-spherical symmetric groundstate 5I8. In the present stage, we realized a magneto-optical trap (MOT) for dysprosium on a broad cooling transition at 421   nm. Future perspectives are to implement a narrow-line MOT on the 626   nm cooling transition, similar to the work in [3].

[1] M. Lu et al., Phys. Rev. Lett. 107, 190401 (2011)

[2] M. Lu et al., Phys. Rev. Lett. 108, 215301 (2012)

[3] K. Aikawa et al., Phys. Rev. Lett. 108, 210401 (2012)

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