Preparation of a quantum state with one molecule at each site of an optical lattice

Details Preparation of a quantum state with one molecule at each site of an optical lattice Preparation of a quantum state with one molecule at each site of an optical lattice

2006-05-08

arxiv.org/abs/cond-mat/0605184v3

Nature Phys. 2, 692 (2006)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1038/nphys415

Ultracold gases in optical lattices are of great interest, because these systems bear a great potential for applications in quantum simulations and quantum information processing, in particular when using particles with a long-range dipole-dipole interaction, such as polar molecules. Here we show the preparation of a quantum state with exactly one molecule at each site of an optical lattice. The molecules are produced from an atomic Mott insulator with a density profile chosen such that the central region of the gas contains two atoms per lattice site. A Feshbach resonance is used to associate the atom pairs to molecules. Remaining atoms can be removed with blast light. The technique does not rely on the molecule-molecule interaction properties and is therefore applicable to many systems.

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