Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 37: Precision Measurements and Metrology II
Q 37.6: Vortrag
Mittwoch, 13. März 2019, 15:15–15:30, S SR 111 Maschb.
The PRIMUS-Project; Optical dipole trapping in a drop tower experiment — •Marian Woltmann1, Christian Vogt1, Sven Herrmann1, Claus Lämmerzahl1, and The PRIMUS-Team1,2 — 1University of Bremen, Center of Applied Space Technology and Microgravity (ZARM) — 2LU Hannover, Institute of Quantum Optics
The application of a matter wave interferometer in a microgravity (µg) environment offers the potential of largely increased interferometer times and thereby highly increased sensitivities in precision measurements. While most such µg experiments apply magnetic trapping on an atom chip, the PRIMUS-Project develops an optical dipole trap for use in weightlessness as an alternative source for matter wave interferometry. Proven its worth on ground, optical dipole traps have never before been operated in µg, although they offer unique advantages like improved symmetry of the trapping potential and the accessibility of Feshbach resonances. Using a 10W trapping laser at a wavelength of 1949nm, we implement a dual species (Rb and K) cold atom experiment for use in the drop tower at the ZARM in Bremen, offering 4.7s of microgravity time in drop mode. Within this talk we will report on the current status and latest results of the experiment. The PRIMUS-Project is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry of Economic Affairs and Energy (BMWi) under grant number DLR 50 WM 1642.