SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Precision Measurements: Gravity II
Q 62.2: Vortrag
Freitag, 10. März 2023, 11:15–11:30, E214
An optical dipole trap in a drop tower - the PRIMUS-project — •Marian Woltmann1, Christian Vogt1, Sven Herrmann1, Claus Lämmerzahl1, and PRIMUS Team1,2 — 1University of Bremen, Center of Applied Space Technology and Microgravity (ZARM), 28359 Bremen — 2LU Hannover, Institute of Quantum Optics
The application of matter wave interferometry in a microgravity (µg) environment offers the potential of largely extended interferometer times and thereby highly increased sensitivities in precision measurements, e.g. of the universality of free fall. While most microgravity cold atom experiments use magnetic trapping with an atom chip, the PRIMUS-project develops an optical dipole trap as an alternative source of ultracold atoms in a drop tower experiment. Solely using optical potentials offers unique advantages like improved trap symmetry, trapping of all magnetic sub-levels and the accessibility of Feshbach resonances. We demonstrated Bose-Einstein condensation of Rubidium in a compact setup on ground while now focusing on a fast, efficient preparation in microgravity using time-averaged optical potentials. Within this talk we will give an overview of the experiment and report on the current status and latest results. The PRIMUS-project is supported by the German Space Agency DLR with funds provided by the Federal Ministry for Economic Affairs and Climate Action under grant number DLR 50 WM 2042.