Multi-loop atomic Sagnac interferometry

ORAL

Abstract

Inertial sensors based on matter-wave interference show great potential for navigation, geodesy, or fundamental physics. Similar to the Sagnac effect, their sensitivity to rotations increases with the area enclosed by the interferometer. In the case of light interferometers, the latter can be enlarged by forming multiple fibre loops. However, the equivalent for matter-wave interferometers remains an experimental challenge. This contribution presents a concept for a multi-loop atom interferometer with a scalable area formed by multiple light pulses. It exploits ultra-cold atomic ensembles combined with symmetric beam splitting and a relaunch mechanism. Due to its scalability it offers the perspective of reaching unprecedented sensitivities for rotations in compact sensor setups.

*Funded/supported by: the DFG under SFB 1227 DQ-mat (ID 274200144), SFB 1464 TerraQ (ID434617780) and EXC-2123 QuantumFrontiers (ID 390837967); the DLR / BMWi under DLR 50WM1952 & 50WM1955 (QUANTUSV-Fallturm), 50WP1700 (BECCAL), 50RK1957 (QGyro), 50NA2106 (QGyro+); the VDI / BMBF under VDI 13N14838 (TAIOL); the BMBF under 13N14875; the "Niedersächsisches Vorab" for the initial funding of research in the new DLR-SI Institute and through QUANOMET (QT3).

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Publication: Schubert, C., Abend, S., Gersemann, M. et al. Multi-loop atomic Sagnac interferometry. Sci Rep 11, 16121 (2021). https://doi.org/10.1038/s41598-021-95334-7

Presenters

  • Matthias Gersemann

    • Gottfried Wilhelm Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, 30167 Hannover, Germany

Authors

  • Matthias Gersemann

    • Gottfried Wilhelm Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, 30167 Hannover, Germany

  • Christian Schubert

    • Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Satellitengeodäsie und Inertialsensorik, c/o LUH, DLR-SI, Callinstraße 36, 30167 Hannover
    • Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Satellitengeodäsie und Intertialsensorik, c/o Leibniz Universität Hannover, DLR-SI

  • Sven Abend

    • Gottfried Wilhelm Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, 30167 Hannover, Germany

  • Dennis Schlippert

    • Leibniz University Hannover
    • Gottfried Wilhelm Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, 30167 Hannover, Germany
    • Leibniz University Hannover, Institute of Quantum Optics

  • Ernst M Rasel

    • Leibniz University Hannover
    • Gottfried Wilhelm Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, 30167 Hannover, Germany
    • Leibniz University Hannover, Institute of Quantum Optics, Hannover, Germany
    • Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
    • Univ Hannover
    • Leibniz Universität Hannover, Institut für Quantenoptik