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A: Fachverband Atomphysik

A 11: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)

A 11.25: Poster

Dienstag, 11. März 2025, 14:00–16:00, Tent

Enhancing Rydberg Atom Cooling and Trapping with a Tunable Light Sheet — Shuanghong Tang, Philip Osterholz, Silpa Baburaj-Sheela, Jule Brosig, •Lukas Fischer, Fabio Bensch, and Christian Groß — Eberhard Karls Universität Tübingen

The utilisation of Rydberg atoms trapped in optical tweezers provides a robust platform for the investigation of strongly interacting and correlated many-body systems. In order to facilitate the tunability of the trapping potential in the vertical direction, we implemented a thin light sheet. The tunability of the vertical confinement increases the trapping frequency, thereby facilitating Raman sideband cooling through the elevation of trap frequencies and the mitigation of gravitational forces, which allows for the implementation of shallower tweezers during the cooling process. A further challenge is the phenomenon of Talbot plane loading, which results in an undesired population of atoms in the planes adjacent to the tweezer array. To address this issue, the light sheet can be employed for loading, thereby ensuring that the atomic reservoir is confined to the primary tweezer plane.

Keywords: Rydberg atoms; Optical tweezers; Atomic trapping; Many-body systems