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Q: Fachverband Quantenoptik und Photonik

Q 38: Quantengase: Optische Gitter 3

Q 38.2: Vortrag

Donnerstag, 15. März 2012, 11:00–11:15, V53.01

Experimental Realization of Strong Effective Magnetic Fields in an Optical Lattice — •Monika Aidelsburger^1,2, Marcos Atala^1,2, Yu-Ao Chen^1,2, Sylvain Nascimbène^1,2,3, Stefan Trotzky^1,2, and Immanuel Bloch^1,2 — ¹Fakultät für Physik, Ludwig-Maximilians-Universität, Schellingstrasse 4, 80799 München, Germany — ²Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany — ³Laboratoire Kastler Brossel, CNRS, UPMC, Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France

Ultracold atoms in an optical lattice are promising candidates to study quantum many-body phenomena, such as the integer or fractional quantum Hall effect. Here we report about the experimental realization of strong effective magnetic fields with ultracold atoms using Raman assisted tunneling in an optical superlattice. We studied the nature of the frustrated ground state in the presence of an effective staggered magentic field from its momentum distribution and directly revealed the quantum cyclotron orbit of a single atom exposed to the magnetic field.