Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 61: Quantum Optics (Miscellaneous)
Q 61.3: Poster
Thursday, March 17, 2022, 16:30–18:30, P
Waveguide QED with Rydberg superatoms — •Lukas Ahlheit1, Nina Stiesdal1, Hannes Busche1, Kevin Kleinbeck2, Jan Kumlin2, Hans-Peter Büchler2, and Sebastian Hofferberth1 — 1Institute for Applied Physics, University of Bonn — 2Institute for Theoretical Physics III, University of Stuttgart
A Rydberg superatom is a model 2-level system formed by thousands of atoms sharing a single excitation to a Rydberg state. Only a single excitation is allowed in the system due to the Rydberg blokade, and due to the collectivity of the excitation, the system couples strongly to a driving coherent field of few photons, and features directionality defined by this driving mode.
On this poster we discuss how we experimentally implement a 1D chain of Ryderg superatoms, and how we use this system to study the dynamics of emitter-light-couplings. In particular, the directed emission of the superatoms makes our free-space chain of superatoms very similar to a chain of emitters coupled to a 1D optical waveguide. This has recently allowed us to realize a multi-photon subtractor, which we present here. We have also studied the collective internal dynamics of many-atom-systems with a single, shared excitation. We discuss how these internal dynamics can be included in a 1D waveguide model.