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Q: Fachverband Quantenoptik und Photonik
Q 54: Posters: Quantum Optics and Photonics IV
Q 54.23: Poster
Donnerstag, 12. März 2020, 16:30–18:30, Empore Lichthof
Setup for a transportable quantum gravimeter — •Jannik Wesche1, Nina Heine1, Jonas Matthias1, Maral Sahelgozin1, Waldemar Herr1, Sven Abend1, Jürgen Müller2, and Ernst M. Rasel1 — 1Institut für Quantenoptik, Leibniz Universität Hannover — 2Institut für Erdmessung, Leibniz Universität Hannover
The transportable quantum gravimeter QG-1 strives for unprecedented accuracy opening up new geodetic applications, for example in hydrology. This poster will give an overview of the transportable QG-1 setup utilising matter-wave interferometry with Bose-Einstein condensates (BECs) of 87Rb atoms. The BEC is created at the top of a dropping tube using atom chip technology. The atoms, acting as test masses for the measurement, are released into free fall under precise control of their external and internal degrees of freedom. To manipulate and interrogate the atoms a fibre-based miniaturised laser system is used. Together with the control electronics, it is integrated into a temperature stabilised rack. The presented compact design and the mobile rack integration grant QG-1 the possibility to measure local gravity at sites of interest for geodesy and geoscience.
We acknowledge financial support from "Niedersächsisches Vorab" through "Förderung von Wissenschaft und Technik in Forschung und Lehre" for the initial funding of research in the new DLR-SI Institute and by the Deutsche Forschungsgemeinschaft (DFG) in the project A01 of the SFB 1128 geo-Q and under Germany’s Excellence Strategy - EXC 2123 QuantumFrontiers, Project-ID 390837967.