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Q: Fachverband Quantenoptik und Photonik

Q 36: Ultracold Molecules

Q 36.4: Vortrag

Dienstag, 6. März 2018, 14:45–15:00, K 2.013

Feshbach spectroscopy and dual-species Bose-Einstein condensation of 23Na-39K mixtures — •Torben Schulze, Torsten Hartmann, Kai Voges, Philipp Gersema, Eberhard Tiemann, Alessandro Zenesini, and Silke Ospelkaus — Institut für Quantenoptik, Leibniz Universität Hannover, 30167 Hannover, Germany

Mixtures of quantum degenerate gases of chemically different atomic species provide a rich testbed for quantum simulation including the study of beyond mean-field quantum droplets and diatomic polar molecules for the formation of supersolid materials. In this talk, we present the first ever creation of quantum degenerate Bose-Bose mixtures of ²³Na and ³⁹K. We present calculations and measurements of scattering rate constants and the previously unknown interspecies Feshbach spectrum in a magnetic field window up to 700 Gauss. Based on the gained understanding, we show the suitability of our mixture for the studies of phase separation and quantum droplets.