Rostock 2019 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster: Quantum Optics and Photonics III

Q 57.4: Poster

Thursday, March 14, 2019, 16:15–18:15, S Fobau Physik

Perspectives for atom interferometry in space-borne geodesy — •Sven Abend, Christian Schubert, Dennis Schlippert, Waldermar Herr, Naceur Gaaloul, and Ernst M. Rasel — Institut für Quantenoptik, LU Hannover

Light-pulse atom interferometry is employed for the measurement of rotations, accelerations and for tests of fundamental physics. Current, atom gravimeters demonstrated an uncertainty of few 10⁸ m/s² and atom gradiometers showed a noise floor of 1.4×10⁹ s⁻²Hz^1/2. Further improvements are anticipated by the integration of novel source concepts providing delta-kick collimated Bose-Einstein condensates and enhanced methods to coherently manipulate the matter waves. The QUANTUS collaboration pioneered these methods and exploited the unique features of microgravity in drop tower experiments and in a sounding rocket mission. All these activities serve as pathfinders for applications of atom interferometry in space. This contribution will outline capabilities of atom interferometers and the perspective for future space missions as gradiometry for earth observation based on atom interferometery.
This work is supported by the DLR with funds provided by the BMWi under grant no. DLR 50WM1552-1557, the VDI with funds provided by the BMBF under grant no. VDI 13N14838, the DFG in the scope of the SFB 1128 geo-Q and "Niedersächsisches Vorab" through QUANOMET.