Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

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

A 40.7: Poster

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

Hybrid quantum systems of Ultracold Atoms and Superconductors — •Helge Hattermann, Florian Jessen, Simon Bernon, Daniel Cano, Daniel Bothner, Martin Knufinke, Matthias Kemmler, Reinhold Kleiner, Dieter Koelle, and Jozsef Fortagh — Physikalisches Institut, Eberhard-Karls-Universität Tübingen,
CQ Center for Collective Quantum Phenomena and their Applications,
Auf der Morgenstelle 14, D-72076 Tübingen, Germany

Hybridizing quantum systems such as ultracold atoms and superconductors is of very first interest for quantum information processing. In this poster, we will report on the experimental realization and recent progress of our superconducting atom chip experiment. We will, in particular, discuss two physical effects that were shown to affect our magnetic trap properties and that are the Johnson noise and the Meissner effect.

Combining in a single experiment solid state and cold atom physics is also a technical challenge. To succeed, we developed the fabrication and interfacing of integrated niobium thin film superconducting chips to make them compatible to both ultra-high vacuum and cryogenic environment. The microtrap formed by this superconducting chip allowed us to reach a gas in the quantum degeneracy regime showing the feasibility of such hybrid systems. We also report on the recent progress obtained to couple cold atomic sample to superconducting microstructures at liquid helium temperature.