Freiburg 2019 – wissenschaftliches Programm
FM 41.28: Poster
Dienstag, 24. September 2019, 16:30–18:30, Tents
T3-interferometry — •Matthias Zimmermann1, Maxim A. Efremov1, Omer Amit2, Yair Margalit3, Frank A. Narducci4, Wolfgang P. Schleich1, and Ron Folman2 — 1Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Ulm, Germany — 2Department of Physics, Ben-Gurion University of the Negev, Be’er Sheva, Israel — 3Research Laboratory of Electronics, MIT-Harvard Center for Ultracold Atoms, Department of Physics, MIT, Cambridge, USA — 4Department of Physics, Naval Postgraduate School, Monterey, USA
By exploiting the Kennard phase , we have proposed an atom interferometer  probing a linear potential and having a phase shift that scales as T3, in contrast to conventional atom interferometers with a phase scaling as T2, where T denotes the total interferometer time.
In this scheme we make use of two magnetic sensitive atomic states |1⟩ and |2⟩ leading to the respective state-dependent accelerations a1 and a2. Based on this work  a Stern-Gerlach interferometer  has been constructed which reveals the pure cubic phase scaling and represents the first atom optics observation of the Kennard phase. As this device does not require light pulses and its accumulated phase is very sensitive to magnetic fields, it may serve as a unique probe for magnetic surface properties.
 G. Rozenman et al., Phys. Rev. Lett. 122, 124302 (2019)
 M. Zimmermann et al., Appl. Phys. B 123, 102 (2017)
 O. Amit et al., submitted to Phys. Rev. Lett. (2019)