Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 38: Poster: Quantum Optics and Photonics I
Q 38.17: Poster
Dienstag, 6. März 2018, 16:15–18:15, Orangerie
Interplay between AC-Stark shift and two-photon light shift in Raman diffraction — •Eric P. Glasbrenner1, Alexander Friedrich1, Wolfgang P. Schleich1, Ernst M. Rasel2, and Enno Giese3 — 1Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, D-89069 Ulm — 2Institut für Quantenoptik, Leibniz Universität Hannover, D-30167 Hannover — 3Department of Physics, University of Ottawa, K1N6N5 Ottawa
Light-pulse atom interferometry has become a standard tool for the realization of high precision experiments and in quantum sensing applications as well as tests of fundamental physics. Nowadays such interferometers rely on either Raman or Bragg diffraction, realized via a retro-reflective setup with two counter-propagating lasers. However setups of this kind lead to a light shift contribution to the interferometer phase due to the off-resonant two-photon transitions. The AC-Stark shift on the other hand arises naturally as the atoms interact with two counter-propagating Raman beams. Usually, this AC-Stark shift is only considered as an energy shift of the initial atomic levels [PRA 78 043615 (2008)] without any contribution to dynamical effects such as the light shift. However, in our presentation we show this point of view is wrong and find the explicit modifications to the light shift due to the AC-Stark effect and analyze its consequences. The QUANTUS project is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number 50WM1556.