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 Folman3 — 1Institut 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)