Trapping and observing single atoms in the dark [Elektronische Ressource] / Thomas A. Puppe

Technische Universit at Munc henMax-Planck-Institut fur QuantenoptikTrapping and observing singleatoms in the darkThomas A. PuppeVollst andiger Abdruck der von der Fakult at fur Physikder Technischen Universit at Munc henzur Erlangung des akademischen Grades einesDoktors der Naturwissenschaften (Dr. rer. nat.)genehmigten Dissertation.Vorsitzender : Univ.-Prof. Dr. H. FriedrichPrufer der Dissertation :1. Hon.-Prof. Dr. G. Rempe2. Univ.-Prof. Dr. F. von FeilitzschDie Dissertation wurde am 23. 05. 2007bei der Technischen Universit at Munc hen eingereichtund durch die Fakult at fur Physik am 23. 07. 2007 angenommen.AbstractA single atom strongly coupled to a single mode of a high- nesse cavity is the principalsystem of matter-light interaction. Experimental studies of fundamental e ects in this require a reliable localization of the atom in the cavity mode.This thesis reports the realization of a novel blue-detuned intracavity dipole trap.The blue trap combines the perfectly aligned, high-contrast modes of the high- nessecavity to form a potential landscape in which an atom is stored close to a dark cen-ter, where the Stark shift vanishes. As a consequence, the free-space properties of thecon ned atom are largely retained, while it is well isolated by the surrounding repellantblue light. The exibility to individually tailor the radial and axial con nement enablese cient loading. Cavity cooling is used to reliably prepare strong coupling.