Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 25: Matter Wave Optics

Q 25.2: Talk

Wednesday, March 16, 2011, 10:45–11:00, BAR Schön

Atom Interferometry in a mobile high-precision setup to measure local gravity — •Matthias Hauth, Malte Schmidt, Alexander Senger, Vladimir Schkolnik, Christian Freier, and Achim Peters — Humboldt-Universität zu Berlin, Institut für Physik, AG Optische Metrologie, Newtonstr. 15, 12489 Berlin

GAIN (Gravimetric Atom Interferometer) is a mobile gravimeter, based on interfering ensembles of laser cooled ⁸⁷Rb atoms in an atomic fountain configuration. The high-precision interferometer is designed to reach an accuracy of a few parts in 10¹⁰ for the measurement of local gravity, g.

We give an introduction into the working principle of our mobile atom interferometer based on a Raman-sequence driving the hyperfine transition of the ⁸⁷Rb ground state and report on our first move to another laboratory. Furthermore we present first gravity-measurements showing earth tides, the current status and steps planned for the future.