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Q: Quantenoptik
Q 18: Cooling and Trapping III (joint session A and Q)
Q 18.4: Talk
Wednesday, April 4, 2001, 17:00–17:15, H 3010
Coherent dynamics of a BEC in an optical lattice — •J. Denschlag1,2, J. Simsarian1, D. Cho1, K. Helmerson1, S. Rolston1, and W.D. Phillips1 — 1NIST, Gaithersburg, MD 20899, USA — 2Institut für Experimentalphysik, Universität Innsbruck
We performed experiments with a sodium Bose-Einstein condensate (BEC) in a 1D optical lattice and observed the coherent evolution of the Bloch states in the lattice. By adiabatically turning on the optical lattice we were able to put more than 99.5% of the BEC into the groundstate of the lattice. Starting from the lattice ground state other lattice states can be coherently populated when we subsequently manipulate the lattice. Using Bloch oscillations a convenient accelerator is demonstrated which is able to impart many photon recoils to a BEC wavepacket.
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