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A: Fachverband Atomphysik
A 28: Poster Session - Atomic Physics IV
A 28.31: Poster
Thursday, March 12, 2020, 16:00–18:00, Empore Lichthof
Dipolar quantum mixtures of erbium and dysprosium — •Claudia Politi2, Philipp Ilzhöfer2, Gianmaria Durastante1,2, Maximilian Sohmen1,2, Arno Trautmann2, Manfred Mark1,2, and Francesca Ferlaino1,2 — 1Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria — 2Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, 6020 Innsbruck, Austria
In the last years, strongly-magnetic atoms drew great attention in the quantum-gas community motivated by the possibility of realizing exotic phases of matter arising from long-range and anisotropic dipole-dipole interactions. So far, experiments with dipolar lanthanides focused on single-species operation. We present an experimental setup, which for the first time, combines two highly magnetic atomic species, erbium and dysprosium. In order to access the numerous interesting regimes, a precise knowledge of the inter-species scattering length is essential. Several techniques are known to probe the collisional properties, including e.g. lattice modulation spectroscopy. We present an alternative method in which, making use of species-selective potentials together with theoretical simulations based on ground state calculations using an extended Gross-Pitaevskii equation, we investigate the unknown inter-species scattering length. Merging the field of dipolar quantum gases with heteronuclear mixtures makes our system an ideal candidate to study the unexplored dipolar immiscibility-miscibility phase diagram and impurity physics in dipolar gases.