Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 27: Poster: Quantum Optics and Photonics II
Q 27.45: Poster
Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof
Microwave system for Atom Manipulation on a Sounding Rocket — •Hossein Abedi, Hossein Fazeli Khalili, Thijs Wendrich, Wolfgang Ertmer, and Ernst Rasel — Institut für Quantenoptik, Leibniz Universität Hannover
A space-bound quantum test of the universality of free fall based on interferometry with mixtures of ultra-cold quantum Rb/K gases is proposed within ESA’s Cosmic Vision program. The sounding-rocket experiment MAIUS of the DLR gives us the opportunity to demonstrate methods necessary for performing interferometry in extended free fall. The experiments will use Double-Raman-scattering between the hyperfine ground states for forming the interferometer. State preparation in the states with lowest magnetic susceptibility, |F=1,2 mF=0>, is achieved by a microwave adiabatic rapid passage starting from the trapped BEC and hence requires for 87Rb a magnetic microwave field at 6.8 GHz. It is however a challenge to combine all the requirements of vacuum, optical access, DC, RF and microwave magnetic fields in a compact atom-chip design.
This poster presents a microwave system that satisfies the requirements of the experiment. It shows how an electromagnetic field with the required frequency can be generated and explains the transmission system.
The QUANTUS/MAIUS 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 50WM1431.