Berlin 2005 – scientific programme

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Q: Quantenoptik und Photonik

Q 32: Quantengase I

Q 32.9: Talk

Tuesday, March 8, 2005, 12:45–13:00, HU Kinosaal

Interaction of Impurity Atoms in Bose-Einstein Condensates — •Alexander Klein and Michael Fleischhauer — Fachbereich Physik, TU Kaiserslautern

The interaction of two spatially separated impurity atoms through phonon exchange in a Bose-Einstein condensate is studied within a Bogoliubov approach. The impurity atoms are held by deep and narrow trap potentials andexperience level shifts which consist of a mean-field part and vacuum contributions from the Bogoliubov-phonons. In addition there is a conditional energy shift resulting from the exchange of phonons between the impurityatoms. Potential applications to quantum information processing are discussed.