Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 15: Poster: Quantum Optics and Photonics I
Q 15.54: Poster
Monday, March 23, 2015, 17:00–19:00, C/Foyer
Local study of quantum transport close to and far away from equilibrium — •Jae-Yoon Choi1, Sebastian Hild1, Takeshi Fukuhara1, Peter Schauß1, Johannes Zeiher1, Immanuel Bloch1,2, and Christian Groß1 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany — 2Fakultät für Physik, Ludwig-Maximilians-Universität München, Schellingstraße 4, 80799 München, Germany
Ultracold atom experiments are well suitable to study out-of-equilibrium dynamics of quantum many-boy systems. A well controlled locally excited atomic Mott insulator state serves as initial state to study the dynamics in different regimes of the Bose-Hubbard model. The ability to manipulate and detect atoms on the single site level opens up novel experimental possibilities to study the dynamics. We report on transport measurements far away from equilibrium where we observe diffusively decaying spin spirals. In contrast, when studying the dynamics close to equilibrium using single impurities we find ballistic transport that is linked to bipartite entanglement generation between different sites.