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A: Fachverband Atomphysik

A 28: Poster Session - Atomic Physics IV

A 28.29: Poster

Donnerstag, 12. März 2020, 16:00–18:00, Empore Lichthof

Realization of dual-species BEC for interferometry in space — •Jonas Böhm¹, Baptist Piest¹, Maike D. Lachmann¹, Wolfgang Ertmer¹, Ernst M. Rasel¹, and The MAIUS Team^{1,2,3,4,5,6,7,8} — ¹Institute of Quantum Optics, LU Hanover — ²Department of Physics, HU Berlin — ³ZARM, University of Bremen — ⁴DLR Institute of Space Systems, Bremen — ⁵Institute of Physics, JGU Mainz — ⁶DLR Simulation and Software Technology, Brunswick — ⁷Ferdinand-Braun-Institut, Berlin — ⁸DLR MORABA, Oberpfaffenhofen

Atom interferometry is a promising tool for measurements of the gravitational constant or the UFF. As the sensitivity scales with the squared interrogation time, conducting these experiments in microgravity is of great interest. The sounding rocket mission MAIUS-A demonstrated the first creation of a BEC in space and its use as a source for atom interferometry. Here, we present the current status of the follow-up mission MAIUS-B that extends the apparatus by another species to perform interferometry with K-41 and Rb-87. The steps to create a dual-species BEC, that includes to load atoms in a 3DMOT from a cold atomic beam created in a 2D MOT and using a sequence of polarization gradient and evaporative cooling, are discussed. Optimization routines relying on machine learning algorithms are highlighted.

The MAIUS project is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant number:50WP1431.