Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster III
Q 56.15: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
A Versatile Setup for the Investigation of Ytterbium Quantum Gases — •A. Thobe, S. Dörscher, B. Hundt, A. Kochanke, C. Becker, and K. Sengstock — Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
Quantum gases of alkaline-earth like atoms such as Calcium, Strontium and Ytterbium (Yb) open up exciting new possibilities for the study of many body physics in optical lattices, ranging from SU(N) symmetric spin Hamiltonians to the Kondo Lattice Model.
Here, we present a new setup for the investigation of bosonic and fermionic Yb quantum gases in a triangular optical lattice. This is the first apparatus to prepare quantum gases of an alkaline earth like element in a 2D/3D-MOT scheme. Atoms from the 2D-MOT, operating on the broad 1S0→ 1P1 transtition, are directly loaded into the 3D-MOT operating on a narrow intercombination line. The atoms are then loaded into a crossed dipole trap, where they are evaporatively cooled to quantum degeneracy. With this setup we routinely produce BECs of 1· 105 atoms and Fermi gases of 2· 104 atoms at T/TF = 0.35.
Moreover, we report on an ultrastable laser system for precision spectroscopy on the ultranarrow 1S0→ 3P0 clock transition in Yb. This laser will serve as a versatile tool for interaction sensing and selective addressing of atoms in a wavelength tunable, state selective, triangular optical lattice, which we are currently implementing.
This work is supported by DFG within SFB 925 and GrK 1355, as well as EU FETOpen (iSense).