Mainz 2026 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 39: Poster – Precision Measurement (joint session Q/A)

A 39.7: Poster

Donnerstag, 5. März 2026, 17:00–19:00, Philo 2. OG

Improving PIXL — •Knut Stolzenberg, Daida Thomas, Christian Struckmann, Ashwin Rajagopalan, Alexander Herbst, Wei Liu, Konstantin Avvacumov, Sebastian Bode, Naceur Gaaloul, Ernst Rasel, and Dennis Schlippert — Institut für Quantenoptik, Leibniz Universität Hannover

Atom interferometers have become a viable tool for inertial sensing and fundamental research, showing excellent long-term stability and sensitivity. However, they are commonly bound to a single sensitive axis, enabling multi-axis inertial sensing only via post-correction with external classical sensors, or correlation with other simultaneous atom interferometers.
The PIXL (Parallelized atom Interferometers for XLerometry) method, utilizing a 3 x 3 array arrangement of Bose-Einstein condensates as input for Mach-Zehnder type atom interferometers, allows for the measurement of the Euler- and centrifugal acceleration, as well as transversal acting linear accelerations induced by gravity.
PIXL’s optical dipole trap setup can furthermore accelerate the ensembles transversal to the atom optics light field, resulting in additional phase shifts in the atom interferometers due to the Sagnac effect. Here, first results of improved rotation sensing and post correction of obstructive vibrations are presented.
Moreover, we envision PIXL as a highly accurate tool to characterize wave front abberations, being the main limitation for e.g. the measurement of the fine structure constant.

Keywords: Atom interferometry; Gyroscope; Inertial sensing; multi-axis sensing