Erlangen 2018 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics V

Q 62.21: Poster

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

High resolution microscopy of cold atoms — Lea Steinert, •Raphael Nold, Markus Stecker, József Fortágh, and Andreas Günther — Center for Quantum Science, Physikalisches Institut, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany

We have developed a novel quantum gas microscope based on ionization of atoms and a high resolution ion optics. The system achieves a magnification up to 1000 and a theoretical resolution limit below 100nm. The microscope consists of four electrostatic lenses and a microchannel plate in conjunction with a delay line detector. This allows for observation of ultracold ground state as well as Rydberg atoms with single atom sensitivity and high temporal and spatial resolution.

In our experiments, we use the high temporal resolution of the ion-microscope to measure the resonant dipole-dipole interaction of Förster resonances via state selective field ionization. Additionally, we show a direct measurement of the excitation blockade for strongly Stark-shifted Rydberg states close to the classical ionization limit. In this regime, the blockade radius can be sensitively adjusted by small changes of the electric field, opening up new perspectives for quantum simulators.