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A: Fachverband Atomphysik
A 41: Poster Session IIIa
A 41.31: Poster
Thursday, March 8, 2018, 16:15–18:15, Orangerie
Quantum many-body physics under the microscope — •Simon Hollerith1, Antonio Rubio Abadal1, Johannes Zeiher1, Jun Rui1, Christian Groß1, and Immanuel Bloch1,2 — 1Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany — 2Ludwig-Maximilians-Universität München, 80539 München, Germany
In our experiment we use a high-resolution objective in order to image and adress ultracold rubidium atoms trapped in a single layer of a three dimensional optical lattice with single-site resolution. Studying the relaxation dynamics of non-equilibrium states under the influence of site-dependent disorder created by our adressing light, we address questions around many-body-localization in two dimensions. Tuning our adressing beam to the magic wavelength where only one of the two spin states interacts with the light field, we study how the localized spins get affected by a thermal bath. In a second project, we use off-resonant coupling to Rydberg states - so called Rydberg dressing - in order to engineer long-range interacting ground state atoms. Using Ramsey sequences, we verify the realization of long-range interacting spin models by measuring spin-spin correlations as well as the total magnetization of our system for variable interaction times.