Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 22: Posters: Quantum Optics and Photonics II
Q 22.56: Poster
Dienstag, 10. März 2020, 16:30–18:30, Empore Lichthof
Fermi-Hubbard physics in 1d and bilayer systems — •Dominik Bourgund1, Joannis Koepsell1, Sarah Hirthe1, Pimonpan Sompet1, Jayadev Vijayan1, Petar Bojovic1, Guillaume Salomon1, Christian Groß1,2, and Immanuel Bloch1,3 — 1Max-Planck-Institut für Quantenoptik, München, Germany — 2Physikalisches Institut, Eberhard Karls Universität Tübingen, Germany — 3Ludwig-Maximilians-Universität München, Germany
Ultracold atoms have emerged as a powerful platform to realize the Fermi-Hubbard model in a fully controlled environment. Our quantum gas microscope gives access to full spin and density resolution and thus allows for the study of the interplay between spin and charge in doped antiferromagnets. In a one-dimensional system we observe the phenomenon of spin-charge separation by locally quenching an antiferromagnetic chain via the removal of an atom. A recent upgrade of our system now allows the study of the bilayer Fermi-Hubbard model which is of special interest in the context of high-Tc superconductivity. We investigate the bilayer phase diagram by probing the metal to band insulator as well as the Mott insulator to band insulator transition. We confirm the expected transition point at an interlayer coupling of four times the intralayer coupling. By making use of the full control over the lattice potential we employ topological charge pumping to achieve single-site resolution of each layer. This technique is benchmarked by spin resolving a 2d antiferromagnetic system.