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Q: Quantenoptik und Photonik

Q 75: Poster Quanteninformation

Q 75.4: Poster

Thursday, March 16, 2006, 16:30–18:30, Labsaal

Control of cold collisions between single neutral atoms — •Leonid Förster, Wolfgang Alt, Igor Dotsenko, Michał Karski, Mkrtych Khudaverdyan, Dieter Meschede, Yevhen Miroshnychenko, Arno Rauschenbeutel, and Sebastian Reick — Institut für Angewandte Physik, Wegelerstraße 8, 53115 Bonn

We use two orthogonally oriented standing wave dipole traps as independent optical “conveyer belts” to transfer single neutral Caesium atoms along the trap axes [1]. By this method and due to sub-micrometer precision of the axial transport an atom can be deterministically deposited into a potential well which already contains another atom. We use light induced inelastic collisions for the reliable detection of the success of this manipulation.

Coherent control of collisions between two individual neutral atoms can be realized by the technique of spin dependent transport [2]. Thereby, the transport direction is determined by the internal state of the atom. We want to study the coherence properties of this controlled atom-atom interaction depending on different transport parameters and atom temperature. We present the current status of the experiment.

[1] S. Kuhr et al., Science 293, 278 (2001)

[2] O. Mandel et al., Nature 425, 937 (2003)