Erlangen 2018 – scientific programme

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A: Fachverband Atomphysik

A 41: Poster Session IIIa

A 41.2: Poster

Thursday, March 8, 2018, 16:15–18:15, Orangerie

Studying ion-atom scattering in the ultracold regime with Rydberg molecules — •Nicolas Zuber, Thomas Schmid, Christian Veit, Thomas Dieterle, Christian Tomschitz, Robert Löw, and Tilman Pfau — 5. Physikalisches Institut & Center for Integrated Quantum Science and Technology (IQST), Universität Stuttgart, Germany

Using Rydberg molecules to study the ion-atom scattering extends the methods for observing ion-atom collisions to the ultracold quantum regime [1] so far not reached by the hybrid ion-atom-trap experiments. We present details about our new experimental setup with lithium and rubidium, which will allow us to photoassociate Rydberg molecules and start the ultracold ion-atom scattering event with a very fast two-photon ionization process. We aim to image the scattered wave packet with an ion microscope on our delay line detector to extract a scattering length. The ion microscope is composed of three electrostatic ion lenses providing a tuneable magnification. The field of view is 34 micrometer at the maximum magnification of 1000 with 25 micrometer depth of field and a spatial resolution below one micrometer. The temporal resolution of our detector is 100 ps with a single particle rate up to several MHz.

[1] T. Schmid et al.; arXiv 1709.10488 (2017).