Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Ultracold Atoms: Manipulation and Detection (with A)

Q 15.8: Vortrag

Dienstag, 9. März 2010, 15:45–16:00, A 320

A New Apparatus for Cavity QED Experiments in the Strong Coupling Regime — •Markus Koch, Christian Sames, Matthias Apel, Max Balbach, Alexander Kubanek, Alexei Ourjoumtsev, Pepijn Pinkse, Karim Murr, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany

The ability to trap single atoms in high-finesse cavities in the strong coupling regime has stimulated the field of cavity QED, leading to the observation of many long predicted effects such as the normal-mode splitting, two-photon resonances or cavity cooling. We present the status of a new apparatus to continue this line of research.

It features an asymmetric cavity, which significantly enhances the photon flux from the cavity. In addition, coned mirrors provide transverse optical access to the trapped atom. Finally, a piezo motor allows to adjust the length of the cavity macroscopically, thus enabling to study cavity QED effects over a broad range of cavity parameters.

First measurements of the normal modes as well as of the intensity response of the system are presented. We observe considerably increased storage times compared to previous experiments, mandatory for further investigations, e.g. nonlinear optics at the single-particle level.