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A: Fachverband Atomphysik

A 41: Poster Session IIIa

A 41.18: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Orangerie

Single Rydberg Impurities immersed in a Bose-Einstein condensate — •Thomas Dieterle, Kathrin Kleinbach, Felix Engel, Carolin Dietrich, Robert Löw, Florian Meinert, and Tilman Pfau — 5. Physikalisches Institut, Universität Stuttgart

For a single Rydberg atom excited from a Bose-Einstein condensate typically thousands of ground-state atoms reside within the Rydberg electron orbit. The Rydberg electron interacts with these perturbers simultaneously via electron-neutral quantum scattering. This has pronounced effects on the excitation spectrum of the Rydberg atom, leading to line shifts and broadenings, which in turn provide information on the underlying scattering physics. Very recently, the problem has been interpreted as a novel and exotic type of mesoscopic polaron.

As such, it appears very appealing to not only study the excitation spectrum, but also investigate the effect of the impurity on the quantum phase and density distribution of the condensate. In our experiment, we combine high-resolution optical microscopy with control over giant Rydberg impurities with electron orbits reaching the micrometer scale. We will report on the status of our endeavor to exploit the impurity's backaction on the condensate for implementing microscopy of the Rydberg electron orbit.