Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 40: Ultracold Atoms and Molecules (with Q)

A 40.8: Vortrag

Freitag, 27. März 2015, 12:45–13:00, B/SR

Towards ultracold LiK ground-state molecules — •Markus Debatin, Sambit B. Pal, Mark Lam, and Kai Dieckmann — Center for Quantum Technologies, National University of Singapore Block S15, 3 Science Drive 2,Singapore 117543

Ultracold heteronuclear molecules have seen increasing interest in the scientific community over the last few years [1]. Due to their large electric dipole moment of 3.6 Debye LiK ground-state molecules are particularly suited to investigate the physics of strongly-interacting dipolar quantum gases.

In our experiment [2] we perform spectroscopy on ultracold 6Li40K Feshbach molecules with the aim to create ground-state molecules. Starting with samples of about 3· 104 ultracold Feshbach molecules we currently investigate transitions mainly to levels close to the asymptote of the B1Π electronic potential. For these levels a good coupling efficiency to the ground state of the X1Σ+ potential is predicted. This will be investigated in the next steps in order to develope a scheme to transfer the Feshbach molecules to the absolute ground state via a simulated Raman adiabatic passage (STIRAP). In the talk our spectroscopy results as well as an update on the current experimental status will be presented.

[1] M. A. Baranov et al. Chem. Rev. 112, 5012-5061, 2012

[2] A.-C. Voigt et al. Phys. Rev. Lett. 102, 020405, 2009

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