Dark state experiments with ultracold, deeply-bound triplet molecules

Details Dark state experiments with ultracold, deeply-bound triplet molecules Dark state experiments with ultracold, deeply-bound triplet molecules

2008-10-31

arxiv.org/abs/0810.5744v2

Physics

Condensed Matter

Other Condensed Matter

20 pages, 9 figures

Scientific paper

We examine dark quantum superposition states of weakly bound Rb2 Feshbach molecules and tightly bound triplet Rb2 molecules in the rovibrational ground state, created by subjecting a pure sample of Feshbach molecules in an optical lattice to a bichromatic Raman laser field. We analyze both experimentally and theoretically the creation and dynamics of these dark states. Coherent wavepacket oscillations of deeply bound molecules in lattice sites, as observed in one of our previous experiments, are suppressed due to laser-induced phase locking of molecular levels. This can be understood as the appearance of a novel multilevel dark state. In addition, the experimental methods developed help to determine important properties of our coupled atom / laser system.

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