Hannover 2020 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 22: Poster Session - Atomic Physics III

A 22.15: Poster

Mittwoch, 11. März 2020, 16:00–18:00, Empore Lichthof

Long-Range Interacting Quantum Systems via Rydberg Dressing in Microtraps — •Lea-Marina Steinert¹, Nikolaus Lorenz¹, Lorenzo Festa¹, Philip Osterholz¹, Joop Adema¹, Robin Eberhard¹, and Christian Groß^1,2 — ¹Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching — ²Physikalisches Institut, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen

Individual neutral atoms trapped in optical tweezers offer a fast and flexible platform for the deterministic creation of atomic arrays. Off-resonant laser coupling to Rydberg states (Rydberg dressing) allow for the study of quantum many-body systems with engineered long-range interactions. By carefully choosing the laser parameters the strong dipolar interactions can be precisely controlled. We aim to realize synthetic quantum magnets based on this engineered inter-spin interaction. Here we report on the status of the project including a high power laser system for Rydberg coupling in the ultraviolett. We show coherent ground - Rydberg state Rabi oscillations for single and Rydberg superatoms and discuss the limits to their coherence. Finally, we discuss experiments aiming at the deterministic loading of a single potassium atom into each of the optical tweezers.