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Q: Fachverband Quantenoptik und Photonik

Q 22: Precision Measurements and Metrology I (joint session Q/A)

Q 22.8: Poster

Dienstag, 15. März 2022, 16:30–18:30, P

Single-photon transitions in atom interferometry — •Alexander Bott¹, Fabio Di Pumpo¹, Enno Giese², and Wolfgang P. Schleich^1,3 — ¹Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQ^ST), Universität Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany — ²Institut für Angewandte Physik, Technische Universität Darmstadt, Schlossgartenstr. 7, Darmstadt D-64289, Germany — ³Institut für Quantentechnologien, Deutsches Zentrum für Luft- und Raumfahrt, Söflinger Str. 100, D-89077 Ulm, Germany

Differential measurements with atom interferometers have been employed for the measurement of gravity gradients and are promising for the detection of gravitational waves. By using only a single laser to create atom interferometers in a differential setup, phase noise from secondary laser beams cannot influence the measurement. However, with a single laser two-photon transitions are no longer possible. Instead, single-photon transitions have to be employed to create the interferometers. In our contribution we perform a detailed discussion of possible types of single-photon transitions and investigate their advantages and draw-backs for atom interferometers. Specifically, we focus on the effects of the coupling induced by the dispersion relation of the laser driving the single-photon transitions in earth-bound experiments.
The QUANTUS project is supported by the German Aerospace Center (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number 50WM1956 (QUANTUS V).