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Very Long Baseline Atom Interferometry

ORAL · Invited

Abstract

Very Long Baseline Atom Interferometry (VLBAI) enables ground-based inertial sensing with largest scale factors. Combined with control over noise sources and systematic effects, VLBAI holds the potential for unprecedented tests of fundamental physics in the domains of gravity, quantum mechanics, and at their interface. With shot noise-limited instabilities better than 10−9 m/s2 at 1 s at the horizon, the Hannover VLBAI facility may also compete with state-of-the-art superconducting gravimeters while providing absolute instead of relative measurements, thus opening new perspectives in Earth observation. Operated with rubidium and ytterbium simultaneously, tests of the universality of free fall at a level of parts in 1013 and beyond are in reach.

We report on facility's key infrastructure: a 10 m magnetic shield and a low-noise seismic attenuation system. We moreover discuss future applications and recent advances in all-optical techniques for picokelvin matter-wave lensing and in commissioning of the Hannover VLBAI facility.

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Publication: Lezeik, Ali, Dorothee Tell, Klaus Zipfel, Vishu Gupta, Étienne Wodey, Ernst Rasel, Christian Schubert, und Dennis Schlippert. "Understanding the gravitational and magnetic environment of a very long baseline atom interferometer". arXiv, 2022. https://doi.org/10.48550/arXiv.2209.08886.<br><br>Schilling, Manuel, Étienne Wodey, Ludger Timmen, Dorothee Tell, Klaus H. Zipfel, Dennis Schlippert, Christian Schubert, Ernst M. Rasel, und Jürgen Müller. "Gravity Field Modelling for the Hannover 10 m Atom Interferometer". Journal of Geodesy 94, 12 (2020): 122. https://doi.org/10.1007/s00190-020-01451-y.<br><br>Schlippert, D., C. Meiners, R. J. Rengelink, C. Schubert, D. Tell, E. Wodey, K. H. Zipfel, W. Ertmer, und E. M. Rasel. "Matter Wave Interferometry for Inertial Sensing and Tests of Fundamental Physics". In CPT and Lorentz Symmetry, 37–40, 2020. https://doi.org/10.1142/9789811213984_0010.<br><br>Wodey, E., D. Tell, E. M. Rasel, D. Schlippert, R. Baur, U. Kissling, B. Kölliker, u. a. "A scalable high-performance magnetic shield for very long baseline atom interferometry". Review of Scientific Instruments 91, 3 (2020): 035117. https://doi.org/10.1063/1.5141340.

Presenters

  • Dennis Schlippert

    Leibniz University Hannover

Authors

  • Dennis Schlippert

    Leibniz University Hannover