Rostock 2019 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 11: Ultra-cold plasmas and Rydberg systems

A 11.13: Poster

Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik

Using heteronuclear Rydberg dimers and trimers to probe ultracold mixtures — •Matthew Eiles — Max Planck Institut fur Physik komplexer Systeme

Long-range Rydberg molecules are composed of a Rydberg atom and a distant ground state atom tens of nanometers away. These unusual molecules have been studied extensively in the last decade as experimentalists searched for them in ultracold gases. They showed that these molecules can indeed be formed in the laboratory, and have confirmed all the original theoretical predictions. Interest in these molecules has hence shifted in two complementary directions: Can other similar bound systems akin to these fragile molecules be created, and, following more practical considerations, can these molecules be used to probe their environment? We have studied two extensions of the original Rydberg molecule concept: polyatomic molecules containing several ground state atoms, and heteronuclear molecules. Their vibrational energies and Franck-Condon factors are highly sensitive to the geometry of the ground state atoms and the properties of the constituent atomic species. Using these different types of Rydberg molecules we have found some promising avenues in which they can be used to probe their environment over large and controllable length scales [1].

[1] M. T. Eiles Phys. Rev. A 98, 042706 (2018).