Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 14: Precision Measurements and Metrology III
Q 14.1: Talk
Tuesday, March 15, 2022, 10:30–10:45, Q-H11
Atom interferometry in the presence of quadratic potentials — •Matthias Zimmermann — Institute of Quantum Technologies, German Aerospace Center (DLR), 89081 Ulm, Germany
Matter-wave interferometers employing trapped atoms are promising candidates to enhance the achievable interferometer time. These compact devices could, for instance, be employed for precision measurements of accelerations and rotations.
This talk will address several fundamental issues that arise for atom interferometry in the presence of quadratic potentials. In particular, we distinguish classical and quantum closing conditions which have a crucial influence on the contrast and thus the signal of the interferometer. Moreover, we present modifications [1] of existing devices that allow their operation within compact geometries. As a particular example, we demonstrate a modified version of the T3 interferometer [2,3] in the presence of quadratic potentials. We analyze advantages and potential drawbacks of this device, and suggest measures to overcome the latter.
[1] M. Zimmermann, Interference of Matter Waves - Branch-dependent dynamics, the Kennard phase, and T3 Stern-Gerlach interferometry, Ph.D. thesis, Ulm University (2021).
[2] M. Zimmermann et al., T3 interferometer for atoms, Appl. Phys. B 123, 102 (2017).
[3] O. Amit et al., T3 Stern-Gerlach Matter-Wave Interferometer, Phys. Rev. Lett. 123, 083601 (2019).