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Q: Quantenoptik und Photonik

Q 8: Quantengase II

Q 8.1: Vortrag

Montag, 13. März 2006, 14:00–14:15, HVI

Superfluid-Insulator Transition in a Periodically Driven Optical Lattice — •Andre Eckardt, Christoph Weiss, and Martin Holthaus — Institut fuer Physik, Carl-von-Ossietzky-Universitaet, 26111 Oldenburg

We demonstrate that the transition from a superfluid to a Mott insulator in the Bose–Hubbard model can be induced by an oscillating force through an effective renormalization of the tunneling matrix element. The mechanism involves adiabatic following of Floquet states, and can be tested experimentally with Bose–Einstein condensates in periodically driven optical lattices.