Berlin 2005 – wissenschaftliches Programm

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Q: Quantenoptik und Photonik

Q 6: Poster Ultrakalte Moleküle

Q 6.1: Poster

Freitag, 4. März 2005, 11:00–12:30, Poster HU

FeLiKx - A Fermionic ⁶Li-⁴⁰K Experiment — •Eric Wille^1,2, Florian Schreck¹, and Rudolf Grimm^1,2 — ¹Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Innsbruck, Österreich — ²Institut für Experimentalphysik, Universität Innsbruck, Österreich

⁶Li and ⁴⁰K are the only naturally occurring fermionic alkali metals. Therefore, these isotopes offer a unique possibility to study the physics of ultracold fermi-fermi mixtures using established techniques from neutral atom trapping and cooling.

Recently ⁶Li₂ and ⁴⁰K₂ molecules were formed and cooled below quantum degeneracy. This opened new perspectives to study many-body quantum effects like the BEC-BCS transition in the vicinity of Feshbach resonances. The formation of ultracold heteronuclear dimers of ⁶Li⁴⁰K would allow to study new effects due to the polarity of these molecules.

We present an experimental setup to produce ultracold ⁶Li-⁴⁰K mixtures below quantum degeneracy which is currently build at the new Institute of Quantum Optics and Quantum Information (IQOQI) in Innsbruck. The setup considers the peculiarities of trapping and cooling ⁶Li and ⁴⁰K. Additionally, a possible way to form heteronuclear molecules using two-species Feshbach resonances is discussed.