Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster Ultrakalte Atome
Q 62.18: Poster
Donnerstag, 22. März 2007, 16:30–18:30, Poster C
Deterministic strong coupling of a controlled number of trapped atoms to the mode of a high finesse optical resonator — •Sebastian Reick, Wolfgang Alt, Igor Dotsenko, Mkrtych Khudaverdyan, Dieter Meschede, Ariane Stiebeiner, and Arno Rauschenbeutel — Institut für Angewandte Physik, Wegelerstr. 8, D-53115 Bonn
Cavity QED experiments provide unique possibilities for studying atom-photon interactions at a fundamental level. In our experiment we explore the coupling of a a small number of neutral caesium atoms to the mode of a high-finesse optical cavity in a controlled and deterministic way.
Using a number-triggered loading process we transfer a pre-determined number of atoms, ranging from one single atom to several atoms, from a MOT into a standing wave dipole trap. Subsequently, the atoms are transported into the center of the cavity mode with sub-micrometer precision.
The atoms are coupled to the field of a probe laser beam, which is resonant with the empty cavity (finesse F ≈ 106), thereby shifting the cavity out of resonance. The time-dependent transmission of the probe laser light is detected, which allows us to infer information about the dynamics of the atom-cavity system.
A single atom coupled to the cavity mode can be observed for several seconds, indicating cavity-assisted cooling.