Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 28: Cold atoms V - optical lattices (joint session A/Q)
Q 28.5: Vortrag
Dienstag, 6. März 2018, 15:00–15:15, K 0.011
Exploring the doped Fermi-Hubbard model in low dimensions — •Joannis Koepsell1, Guillaume Salomon1, Timon Hilker1, Jayadev Vijayan1, Michael Höse1, Immanuel Bloch1,2, and Christian Gross1 — 1Max-Planck-Institut für Quantenoptik, Garching — 2Fakultät für Physik, Ludwig-Maximilians-Univsersität, München
We use ultracold fermionic lithium atoms to realize synthetic one dimensional Fermi-Hubbard chains. With our quantum gas microscope we study emerging antiferromagnetic correlations as a function of doping and magnetization. The local spin and density resolution allows us to observe the change of the wave vector of the spin correlations as a function of density and magnetization. In a quantitative comparison we show that our results can be well described by Luttinger-liquid theory. Finally we report on ongoing studies of the system in the crossover from one to two dimensions.