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A: Fachverband Atomphysik

A 40: Poster: Ultra-cold atoms, ions and BEC

A 40.26: Poster

Donnerstag, 15. März 2012, 16:30–19:00, Poster.V

Matter wave guiding through a photonic bandgap fiber — •Hannes Duncker, Lars Wacker, Patrick Windpassinger, and Klaus Sengstock — Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg

In this contribution, we present a project where we intend to study light-matter interaction in an extremely one-dimensional geometry by loading ultracold atoms into a hollow core photonic bandgap (HCPBG) fiber. As a first step, we have been able to demonstrate guiding of cold, slow atoms through an 88 mm long piece of fiber [1]. The guiding potential is created by a far-off resonance dipole trap which propagates in the hollow core of the HCPBG fiber. By imaging the guided atoms' fluorescence signal, we are able to analyze the dynamics of the atoms inside the fiber in detail. The tight confinement of both atoms and light fields inside the fiber leads to an increased interaction probability which will allow us to study atom mediated photon-photon interaction in the future.

[1] S. Vorrath et al, NJP 12, 123015 (2010)