Localisation of a single atom in a high fi nesse cavity

7 10/2014

Tuesday, 07 Oct. 2014, 15:30 - 16:30

Presenter: Ingmari Tietje; MPQ Garching, Germany
Host: M. Aspelmeyer
Where: Schrödingerroom, 4th floor, Boltzmanngasse 5, 1090 Wien

A scheme which traps and cools atoms in a high fi nesse cavity is realised and presented. The atoms are localised in the cavity, where they strongly interact with a single mode of the cavity driven by a probe laser. This type of experiment belongs to the research field of cavity quantum electrodynamics (cavity QED). It enables the investigation of matter-light interaction of individual particles and photons, which are stored in an optical resonator. In this talk it demonstrated that with the implemented trap, a scheme that reliably traps and cools atoms in the cavity is realised. Amongst other measurements average storage time measurements of the atoms in the cavity are presented as well as normal mode measurements demonstrating strong coupling between the cavity and the trapped atom. An exemplifying measurement reveals that atoms are trapped and cooled independent of the cavity frequency.