Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie

Q 57.73: Poster

Donnerstag, 17. März 2011, 16:30–19:30, P1

Towards a two-species mixed gas of ⁶Li and ¹³³Cs atoms and LiCs molecules at high phase-space densities — •Stefan Schmidt¹, Marc Repp¹, Johannes Deiglmayr², Rico Pires¹, Juris Ulmanis¹, Romain Müller¹, Kristina Meyer¹, Roland Wester³, and Matthias Weidemüller¹ — ¹Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg — ²Physikalisches Institut, Albert-Ludwigs-Universität Freiburg — ³Institut für Ionenphysik und Angewandte Physik, Leopold-Franzens-Universität Innsbruck

The LiCs dimer is a particularly promising candidate for observing dipolar effects, as it possesses the largest dipole moment of 5.5 Debye of all alkali dimers [1]. We have studied the formation of LiCs molecules via photoassociation [2] at MOT temperatures. The population dynamics of ro-vibrational states in a trapped sample of ultracold LiCs molecules via black-body driven transitions or spontaneous decay was further investigated [3].
This poster will present the current status of a redesign of our experimental apparatus. A double-species Zeeman slower will allow to consecutive decelerate Cs and Li atoms. Further cooling steps, like Raman sideband cooling of Cs atoms and forced evaporative cooling in independent dipole traps, will bring the species to quantum degeneracy. After bringing the two gases together, molecules are to be formed via Feshbach resonances followed by a STIRAP step.

[1] J. Deiglmayr et al., Phys. Rev. A 82, 032503 (2010)

[2] J. Deiglmayr et al., Phys. Rev. Lett. 101, 133004 (2008)

[3] J. Deiglmayr et al., in preparation