Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 54: Posters: Quantum Optics and Photonics IV
Q 54.8: Poster
Thursday, March 12, 2020, 16:30–18:30, Empore Lichthof
Large-Momentum-Transfer Atom Optics from a Floquet-Bloch viewpoint — •Eric P. Glasbrenner1, Alexander Friedrich1, Enno Giese1, and Wolfgang P. Schleich1,2 — 1Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany — 2Institute of Quantum Technologies, German Aerospace Center (DLR), D-89077 Ulm, Söflinger Str. 100, Germany
Atom interferometers have evolved into high-precision instruments and are used nowadays in numerous applications as gravimeters, rotation sensors and in general inertial sensing tasks. The development rapidly moves towards compact setups aimed at the commercialization of atom interferometers. For such applications, both high precision and sensitivity are essential. One technique to increase the sensitivity is to use Large-Momentum-Transfer (LMT) methods such as double Bragg diffraction, sequential pulses or Bloch oscillations. In this contribution we propose a semi-analytical approach towards the description of light-pulse beam splitters and mirrors as well as Bloch oscillations in a unified framework. Specifically, we develop a Floquet-Bloch theory to model diffraction as well as Bloch oscillations which allows us to discuss e.g. the effects of parasitic lattices caused by imperfect polarization.
The QUANTUS project is supported by the German Aerospace Center (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number 50WM1956.