Hannover 2020 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 13: Posters: Quantum Optics and Photonics I
Q 13.17: Poster
Montag, 9. März 2020, 16:30–18:30, Empore Lichthof
Optical Dipole Trap as a Source of Ultracold Atoms in Microgravity — •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
Cold atoms have proven to be effective tools with wide applications in measuring weakest forces and thereby in testing fundamental physics e.g. the weak equivalence principle. The sensitivity of such atom interferometer measurements scales with the square of the interrogation time, typically limited by the size of the vacuum chamber. Therefor the step to employ atom interferometers in weightlessness offers the potential of highly increased sensitivities. 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. As the dipole trap is based on optical interactions only, Feshbach resonances will become feasible in microgravity. Furthermore the optical dipole trap allows to trap all magnetic sub-states and offers an enhanced symmetry of the trapping potential. This poster will give an overview of the experiment and report on latest results. The PRIMUS-project is supported by the German Space Agency DLR with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number DLR 50 WM 1642.