Mainz 2026 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 82: Matter Wave Interferometry, Metrology, and Fundamental Physics IV

Q 82.1: Vortrag

Freitag, 6. März 2026, 14:30–14:45, P 11

Extracting signal from noisy very-long baseline atom interferometers — •Michael Werner and Naceur Gaaloul — Insti- tut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany

Light pulse atom interferometers (AIFs) are exquisite highly quan- tum sensors for inertial forces. State-of-the-art AIFs are used to mea- sure the fine-structure constant, or analyze the gravitational field and its spatial and temporal variations to high accuracy. Distinguish- ing between actual signals and noise is a critical challenge, especially when aiming to detect gravitational waves or dark matter in the mid- frequency range. Understanding each noise source in the interfero- metric process is essential for the success of future initiatives. In our study, we examine how various prominent noise sources impact one- dimensional AIFs of different configurations and identify the most sta- ble setups for the example of the VLBAI facility in Hannover

Keywords: Atom interferometry; Interference; Matter waves; Metrology