Understanding the gravitational and magnetic environment of a very long baseline atom interferometer

verfasst von
Ali Lezeik, Dorothee Tell, Klaus Zipfel, Vishu Gupta, Étienne Wodey, Ernst Rasel, Christian Schubert, Dennis Schlippert
Abstract

By utilizing the quadratic dependency of the interferometry phase on time, the Hannover Very Long Baseline Atom Interferometer facility (VLBAI) aims for sub nms−2 gravity measurement sensitivity. With its 10 m vertical baseline, the VLBAI offers promising prospects in testing fundamental physics at the interface between quantum mechanics and general relativity. Here we discuss the challenges imposed by controlling the VLBAI’s magnetic and gravitational environment and report on their effect on the device’s accuracy. Within the inner 8 m of the magnetic shield, residual magnetic field gradients expect to cause a bias acceleration of only 6 × 10−14 ms−2 while we evaluate the bias shift due to the facility’s non-linear gravity gradient to 2.6 nms−2. The model allows the VLBAI facility to be a reference to other mobile devices for calibration purposes with an uncertainty below the 10 nms−2 level.

Organisationseinheit(en)
QuantumFrontiers
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)
SFB 1464: Relativistische und quanten-basierte Geodäsie (TerraQ)
Institut für Quantenoptik
Externe Organisation(en)
DLR-Institut für Satellitengeodäsie und Inertialsensorik
Typ
Aufsatz in Konferenzband
Seiten
64-68
Publikationsdatum
06.2023
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
Elektronische Version(en)
https://doi.org/10.48550/arXiv.2209.08886 (Zugang: Offen)
https://doi.org/10.1142/9789811275388_0014 (Zugang: Geschlossen)