Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 48: Ultracold atoms: Traps and cooling
Q 48.3: Vortrag
Donnerstag, 21. März 2013, 11:30–11:45, A 310
EIT-control of single-atom motion in an optical cavity — •Tobias Kampschulte1, Wolfgang Alt1, Sebastian Manz1, Miguel Martinez-Dorantes1, René Reimann1, Seokchan Yoon1, Dieter Meschede1, Marc Bienert2, and Giovanna Morigi2 — 1Institut für Angewandte Physik, Universität Bonn, Wegelerstrasse 8, 53115 Bonn — 2Theoretische Physik, Universität des Saarlandes, 66123 Saarbrücken
We demonstrate cooling of the motion of a single atom confined by a dipole trap inside a high-finesse optical resonator. Cooling of the vibrational motion results from EIT-like interference in an atomic Λ-type configuration, where one transition is strongly coupled to the cavity mode and the other is driven by an external control laser. Good qualitative agreement with the theoretical predictions is found for the explored parameter ranges. The role of the cavity in the cooling dynamics is confirmed by means of a direct comparison with EIT-cooling performed in the dipole trap in free space. These results set the basis to the realization of an efficient photonic interface based on single atoms.