A Mott Insulator of Ultracold Alkaline-Earth-Like Atoms

Details A Mott Insulator of Ultracold Alkaline-Earth-Like Atoms A Mott Insulator of Ultracold Alkaline-Earth-Like Atoms

2009-01-15

arxiv.org/abs/0901.2197v2

Phys. Rev. A 79, 041604(R) (2009)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevA.79.041604

The transition from a superfluid to a Mott insulator (MI) phase has been observed in a Bose-Einstein condensate (BEC) of ytterbium (Yb) atoms in an optical lattice. An all-optically produced BEC of 174Yb atoms was loaded into three-dimensional optical lattices produced by a 532 nm laser beam. The interference pattern was measured after releasing the quantum gas from the trapping potential. As increasing the optical lattice depth, we observed the disappearance of the interference patterns, which is a signature of entering the MI regime. This result is an important step into studies by using a combination of the MI state and the ultranarrow optical transition of ultracold alkaline-earth-like atoms.

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