Deeply bound ultracold molecules in an optical lattice

Details Deeply bound ultracold molecules in an optical lattice Deeply bound ultracold molecules in an optical lattice

2008-12-30

arxiv.org/abs/0812.5070v1

Physics

Condensed Matter

Other Condensed Matter

12 pages, 4 figures, submitted to the Special Issue of New Journal of Physics on Cold and Ultracold Molecules

Scientific paper

We demonstrate efficient transfer of ultracold molecules into a deeply bound rovibrational level of the singlet ground state potential in the presence of an optical lattice. The overall molecule creation efficiency is 25%, and the transfer efficiency to the rovibrational level |v=73,J=2> is above 80%. We find that the molecules in |v=73,J=2> are trapped in the optical lattice, limited by optical excitation by the lattice light. The molecule trapping time for a lattice depth of 15 atomic recoil energies is about 20 ms. We determine the trapping frequency by the lattice phase and amplitude modulation technique. It will now be possible to transfer the molecules to the rovibrational ground state |v=0,J=0> in the presence of the optical lattice.

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