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Q: Quantenoptik

Q 22: Poster: Quantum Effects

Q 22.12: Poster

Thursday, April 5, 2001, 12:30–15:00, AT2

Nonlocality of atomic wave packets in a linear potential — •Florian Haug, Marc Bienert, Matthias Freyberger, and Wolfgang P. Schleich — Abteilung für Quantenphysik, Universität Ulm

We demonstrate that an atomic wave packet falling through a quantized cavity field splits up into spatially separated packets. The corresponding atom-field interaction entangles all quantum degrees of freedom, i.e. the quantized field, the internal state of the atom and the quantized atomic motion.

The distance between the resulting wave packets as well as the distance between the wave packets and the cavity is mesoscopic. Therefore and due to the fact that wave packets and cavity are entangled we have created a mesoscopic No-dqSchrödinger-CatNo-dq-state.

By analyzing appropriate observables and their correlations we show that this model leads to a violation of the Clauser-Horne-Shimony-Holt-inequality. This fact shows clearly that there is no chance matching such correlations with a local realistic theory.