Ultracold Molecules in the Ro-Vibrational Triplet Ground State

Abstract

We report here on the production of an ultracold gas of tightly bound Rb2 molecules in the ro-vibrational triplet ground state, close to quantum degeneracy. This is achieved by optically transferring weakly bound Rb2 molecules to the absolute lowest level of the ground triplet potential with a transfer efficiency of about 90%. The transfer takes place in a 3D optical lattice which traps a sizeable fraction of the tightly bound molecules with a lifetime exceeding 200 ms.

4 pages, 3 figures. Phys. Rev. Lett. accepted

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• Demonstrating coherent control in 85Rb2 using ultrafast laser pulses: a theoretical outline of two experiments
• Coherent bimolecular reactions with quantum-degenerate matter waves