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A: Fachverband Atomphysik

A 21: Innovative Traps and Cooling Schemes (jointly with Q)

A 21.1: Talk

Thursday, March 22, 2007, 14:00–14:15, 5D

Time-Averaged Adiabatic Potentials: Novel traps and waveguides for ultracold quantum gases — •Wolf von Klitzing and Igor Lesanovsky — Institute of Electronic Structure and Laser, Foundation for Research and Technology -Hellas, P.O.Box1527, GR-71110 Heraklion, Greece

We demonstrate a novel class of trapping potentials, time-averaged adiabatic potentials (TAAP) which allows the generation of a large variety of traps and waveguides for ultracold atoms. Multiple traps can be coupled through controllable tunneling barriers or merged altogether. We present analytical expressions for pancake-, cigar-, and ring- shaped traps. The ring-geometry is of particular interest for guided matter-wave interferometry as it provides a perfectly smooth waveguide of controllable diameter, and thus a tunable sensitivity of the interferometer.

[1] I. Lesanovsky and W. von Klitzing, preprint: cond-mat/0612213 (2006)