Heidelberg 2015 – wissenschaftliches Programm
A 18.17: Poster
Dienstag, 24. März 2015, 17:00–19:00, C/Foyer
Towards the Fermi Quantum Microscope — •Katharina Kleinlein1, Ahmed Omran1, Martin Boll1, Timon Hilker1, Guillaume Salomon1, Immanuel Bloch1,2, and Christian Groß1 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany — 2Ludwig-Maximilians-Universität, Schellingstraße 4, 80799 München, Germany
Ultracold atoms in optical lattices have proven to be a powerful tool for exploring a variety of phenomena in strongly correlated many-body systems. Its controllability and possibilities of probing its states allow for simulation of a wide range of phenomena occurring in solid-state systems. A new door for exploring those many-body states opened with the achievement of single-site resolved imaging of bosonic atoms in optical lattices. However, single-site resolution of fermionic atoms remains challenging. Here we report on the latest progress of our 6Li machine aimed at achieving this goal. We load ultracold 6Li into a far detuned (1064nm) 3D optical lattice with variable lattice geometry. The system is described by the Fermi-Hubbard Hamiltonian, yielding a rich phase diagram for investigation. A smaller scale, deep pinning lattice is superimposed onto the larger scale physics lattice, where Raman-sideband cooling is applied. The scattered photons of this process provide the detection signal, which will be collected using a high resolution microscope objective. We present insights and progress on this Raman-sideband cooling and detection technique, representing a possible key technology towards single-site resolved imaging of strongly-correlated fermionic many-body systems.