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Q: Fachverband Quantenoptik und Photonik

Q 13: Ultra-cold atoms, ions, and BEC (joint session A/Q)

Q 13.19: Poster

Mittwoch, 22. September 2021, 16:30–18:30, P

Dual-species BEC for atom 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} — ¹Institute of Quantum Optics, LU Hanover — ²Department of Physics, HU Berlin — ³ZARM, U Bremen — ⁴DLR Institute of Space Systems, Bremen — ⁵Institute of Physics, JGU Mainz — ⁶DLR Simulation and Software Technology, Brunswick — ⁷FBH, Berlin

Atom interferometry is a promising tool for measurements of the gravitational constant, universality of free fall and gravitational waves. As the sensitivity scales with the squared interrogation time, conducting atom interferometry in microgravity is of great interest.

The sounding rocket mission MAIUS-1 demonstrated the first BEC and matter wave interferences of it in space. With the follow-up missions MAIUS-2 and -3, we extend the apparatus by another species to perform atom interferometry with Rb-87 and K-41, paving the way for dual-species interferometers on bord of space stations or satellites.

In this contribution, the current status of the scientific payload MAIUS-B is discussed, fulfilling the requirements of generating Rb-87 and K-41 BECs with a high repetition rate in a compact, robust, and autonomously operating setup. The atomic state preparation and the manipulation using Raman double-diffraction processes are highlighted as well.

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.