Mainz 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 52: Quantum Gases: Fermions II
Q 52.8: Vortrag
Donnerstag, 9. März 2017, 16:15–16:30, P 204
High-Precision Spectroscopy of Ultracold Fermions in a Honeycomb Lattice — •Nick Fläschner1,2, Benno S. Rem1,2, Matthias Tarnowski1,2, Dominik Vogel1, Christof Weitenberg1,2, and Klaus Sengstock1,2,3 — 1ILP - Institut für Laserphysik, Hamburg, Deutschland — 2The Hamburg Centre for Ultrafast Imaging, Hamburg, Deutschland — 3ZOQ - Zentrum für Optische Quantentechnologien, Hamburg, Deutschland
Ultracold atoms in optical lattices with tunable geometry [1-4] can be employed to emulate various solid-state systems. For the understanding of such complex quantum systems, it is desirable to develop versatile spectroscopy methods. Here we demonstrate a high-precision multi-band spectroscopy in a honeycomb lattice using ultracold fermionic atoms. We determine both the fully momentum-resolved energy spectrum and the excitation probabilities, which reflect the symmetry of the eigenstates and e.g. the Dirac cones in the system. Our results provide an ideal starting point for the investigation of interacting systems.
Becker et al., New J. Phys. 12, 065025 (2010)
Soltan-Panahi et al., Nat. Phys. 7, 434-440 (2011)
Taruell et al., Nature 483, 302-305 (2012)
Fläschner/Rem et al., Science 352, 1091-1094 (2016)