Bonn 2025 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 25: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)

Q 25.54: Poster

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

Two-dimensional grating magneto-optical trap — •Joseph Muchovo, Julian Lemburg, Sam Ondracek, Kai-Christian Bruns, Vivek Chandra, Hendrik Heine, and Ernst M. Rasel — Leibniz Universität Hannover, Institut für Quantenoptik

Ultracold atoms provide exciting opportunities for advancing matterwave interferometry and enabling more precise tests of fundamental physics in a variety of experimental and applied settings. To achieve larger atom numbers and higher repetition rates, two-dimensional (2D) magneto-optical traps (MOTs) can be employed as separate source chambers. These offer distinct advantages in the pre-cooling and faster, more efficient loading of atoms into three-dimensional grating MOTs, a key step for many precision measurements. To realise field applications of quantum sensors utilising cold atoms, there is need for simpler, more efficient and more compact sources.

In this poster, we will present the design and implementation of a 2D grating MOT requiring only a single input cooling beam in combination with pusher-retarder beams, thereby simplifying the setup. This innovative approach will result in a robust, highly compact, and efficient source of ultracold atoms that can be used in field and space applications.

Keywords: 2D-gratingMOT; Single beam cooling; Optical Gratings; Grating MOT; Atomic source