Hannover 2020 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 40: Precision Measurements and Metrology (Atom Interferometry)

Q 40.1: Gruppenbericht

Donnerstag, 12. März 2020, 11:00–11:30, a310

Very Long Baseline Atom Interferometry: vision and challenges — •Etienne Wodey1, Christian Meiners1, Dorothee Tell1, Robert J. Rengelink1, Manuel Schilling2, Klaus Zipfel1, Wolfgang Ertmer1, Christian Schubert1, Ludger Timmen2, Jürgen Müller2, Dennis Schlippert1, and Ernst M. Rasel11Leibniz Universität Hannover, Institut für Quantenoptik — 2Leibniz Universität Hannover, Institut für Erdmessung

Atom interferometers are powerful tools to perform precision measurements and search for new physics. New applications, including the detection of gravitational waves and exotic matter searches, nevertheless require significant upgrades to the sources of ultracold atoms with enhanced atom numbers and repetition rates on long baselines to achieve low instabilities. In addition, improved control over wavepacket dynamics and the homogeneity of the interferometer’s environment are key to reduce instrumental biases.

We report on the development of the Very Long Baseline Atom Interferometry (VLBAI) facility, a 10 m-baseline device located at the newly founded Hannover Institute of Technology (HITec). Based on our work on large scale magnetic shielding and gravitational environment mapping as well as on vibration isolation and high-flux atomic sources, we review recent advances towards effective long baseline matterwave inertial sensors, and discuss methods and challenges for the next generation ultra long baseline atom interferometers.

We acknowledge support by the DFG (Großgeräte), the CRCs 1128 “geo-Q” and 1227 “DQ-mat”, and the EXC 2123 “QuantumFrontiers”.

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