Van der Waals-Zeeman Colloquium

Tuesday, 23 November 2010, 16:00 (Science Park 904)

Single-atom-resolved detection and manipulation of strongly correlated atoms in an optical lattice

Dr. Stefan Kuhr
Max-Planck Institut f. Quantenoptik, Garching

Ultracold quantum gases in optical lattices have led to a convergence between atomic physics and condensed matter physics. To fully exploit the potential of ultracold atoms as a quantum simulator it is of great advantage to precisely measure the in-trap atom distribution in order to fully characterize the quantum many-body states. I will report on our recent fluorescence imaging of bosonic Mott insulators in an optical lattice with single-atom and single-site resolution. From our images, we are able to fully reconstruct the atom distribution on the lattice and identify individual thermal excitations with high fidelity, giving access to a precise in-situ temperature and entropy measurement. Finally, I will present our latest progress towards addressing and manipulation of individual lattice sites.