Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 64: Matterwave Optics II

Q 64.1: Talk

Friday, March 12, 2010, 14:00–14:15, A 320

Berry phase in atom optics — •Polina V. Mironova, Maxim A. Efremov, and Wolfgang P. Schleich — Universität Ulm, Ulm, Deutschland

We suggest to use the concept of the Berry phase to create an atomic lens. In particular, we consider the scattering of an atom by a near-resonant standing light wave, assuming an adiabatic turn-on and turn-off of the interaction. Within the rotating wave approximation and the adiabatic approximation on the atomic center-of-mass motion we find that the dynamical phase is cancelled out and the final state of the atom differs from the initial one only by twice the familiar Berry phase, which depends on the atomic external degrees of freedom. Therefore, the scattering process is determined by the atomic center-of-mass position.