Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster: Quantum Optics and Photonics III
Q 57.9: Poster
Donnerstag, 14. März 2019, 16:15–18:15, S Fobau Physik
High-precision quantum gravimeter GAIN — •Bastian Leykauf1, Anne Stiekel1, Sascha Vowe1, Benjamin Wiegand1, Hartmut Wziontek2, Axel Rülke2, Markus Krutzik1, and Achim Peters1 — 1Institut für Physik, Humboldt-Universität zu Berlin — 2Bundesamt für Kartographie und Geodäsie (BKG)
GAIN employs atom interferometry based on stimulated Raman transitions to precisely and accurately measure local gravity [1]. The performance of the device was assessed during a measurement campaign conducted at the geodetic observatory Wettzell in 2017 in cooperation with the German Federal Agency for Cartography and Geodesy (Bundesamt für Kartographie und Geodäsie, BKG).
We will report on recent improvements implemented into the apparatus, focusing on the status of a new modularized laser system.
Furthermore, we discuss the study of systematic effects [2,3] and efforts towards simplified techniques for laser-cooling of 85Rb and 87Rb with a single diode laser.
[1] Freier et al. Mobile quantum gravity sensor with unprecedented stability, Journal of Physics: Conference Series 723 (2016)
[2] Hu et al. Mapping the absolute magnetic field and evaluating the quadratic Zeeman-effect-induced systematic error in an atom interferometer gravimeter, Physical Review A 96, 033414 (2017)
[3] Hu et al. Observation of vector and tensor light shifts in 87Rb using near-resonant, stimulated Raman spectroscopy, Physical Review A 97, 013424 (2018)