SAMOP 2023 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 31: Precision Measurements: Atom Interferometry I (joint session Q/A)

Q 31.3: Vortrag

Mittwoch, 8. März 2023, 11:30–11:45, F102

Multi-Axis sensing utilising guided atom interferometry — •Knut Stolzenberg, Sebastian Bode, Alexander Herbst, Wei Liu, Henning Albers, Ernst Rasel, and Dennis Schlippert — Leibniz Universität Hannover, Institut für Quantenoptik

Inertial sensors based on atom interferometry are a superior alternative to classical sensors regarding accuracy and long-term stability. Particularly in the field of autonomous navigation quantum sensors can become a viable addition to GNSS and classical IMUs. Yet the simultaneous measurement of accelerations and rotations is challenging to present experiments.
In our setup a 1064  nm crossed optical dipole trap (ODT) is used for the evaporation to quantum degeneracy. By using acousto-optical deflectors in both ODT beam paths, we add versatile control over the trapping potentials with respect to position and trap depth. This allows for the creation of one or more BECs amounting to a total number of up to 250× 10³ ultracold ⁸⁷Rb atoms prepared in the magnetic insensitive state |F=1,m_F=0>. After preparation the ensembles are loaded into 1D-optical waveguides to counteract gravity and ensure radial confinement. Subsequently we span Mach-Zehnder atom interferometers utilising double-Bragg diffraction. In addition to measuring accelerations, we discuss future perspectives enabling sensitivity to gradients and rotation rates.