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Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 54: Posters: Quantum Optics and Photonics IV

Q 54.7: Poster

Thursday, March 12, 2020, 16:30–18:30, Empore Lichthof

T3-interferometry — •Matthias Zimmermann1, Maxim A. Efremov1,2, Omer Amit3, Frank A. Narducci4, Wolfgang P. Schleich1,2, and Ron Folman31Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Ulm, Germany — 2Institute of Quantum Technologies, German Aerospace Center (DLR), Ulm, Germany — 3Department of Physics, Ben-Gurion University of the Negev, Be’er Sheva, Israel — 4Department of Physics, Naval Postgraduate School, Monterey, USA

By exploiting the Kennard phase [1], we have proposed an atom interferometer [2] probing a linear potential and having a phase shift that scales as T3, in contrast to conventional atom interferometers in the Mach-Zehnder configuration with a phase scaling as T2, where T denotes the total interferometer time [3]. In this scheme we make use of two magnetic sensitive atomic states |1⟩ and |2⟩ leading to respective state-dependent accelerations a1 and a2 when the atom is exposed to a magnetic field gradient.

We present our unique Stern-Gerlach interferometer that enabled the successful observation of the cubic phase scaling [4]. As our device utilizes magnetic field gradients instead of light pulses for the beam-splitting process, it may serve as a unique probe for the study of surface properties.

[1] G. Rozenman et al., Phys. Rev. Lett. 122, 124302 (2019)

[2] M. Zimmermann et al., Appl. Phys. B 123, 102 (2017)

[3] M. Zimmermann et al., New J. Phys. 21, 073031 (2019)

[4] O. Amit et al., Phys. Rev. Lett. 123, 083601 (2019)

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