Long-lived Feshbach molecules in a 3D optical lattice

Details Long-lived Feshbach molecules in a 3D optical lattice Long-lived Feshbach molecules in a 3D optical lattice

2005-10-27

arxiv.org/abs/cond-mat/0510755v1

Phys. Rev. Lett. 96, 050402 (2006)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.96.050402

We have created and trapped a pure sample of 87Rb2 Feshbach molecules in a three-dimensional optical lattice. Compared to previous experiments without a lattice we find dramatic improvements such as long lifetimes of up to 700 ms and a near unit efficiency for converting tightly confined atom pairs into molecules. The lattice shields the trapped molecules from collisions and thus overcomes the problem of inelastic decay by vibrational quenching. Furthermore, we have developed a novel purification scheme that removes residual atoms, resulting in a lattice in which individual sites are either empty or filled with a single molecule in the vibrational ground state of the lattice.

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