Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 22: Quantum Effects: Entanglement and Decoherence II

Q 22.7: Vortrag

Mittwoch, 10. März 2010, 12:00–12:15, A 310

Complete suppression of atomic spontaneous emission and exited level shift with a half cavity — •Hétet Gabriel, Slodicka Lukas, Hennrich Markus, and Blatt Rainer — Institut für Experimentalphysik Innsbruck University, Austria

In this presentation we investigate the emission properties of a single atom in front of a spherical mirror covering half of the emission solid angle. We show that in this configuration it is possible to completely suppress the spontaneous emission of the atom and the level shift of its excited electronic state.

First, we explain the underlying physical process on a simplied one dimensional model. We then present a three dimensional theory that demonstrates that the density of modes around a linearly polarized atomic dipole can reach zero within a small volume around the atom.

We discuss the implications of such a finding for quantum information processing and QED effects in free space, and present the on-going experimental efforts towards observing large effects using single trapped ions in front of high numerical aperture optical elements.