Hannover 2020 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 54: Posters: Quantum Optics and Photonics IV
Q 54.12: Poster
Donnerstag, 12. März 2020, 16:30–18:30, Empore Lichthof
Double Raman diffraction for atom optics — •Sven Abend1, Matthias Gersemann1, Martina Gebbe2, Simon Kanthak3, Christian Schubert1, Ernst M. Rasel1, and the QUANTUS Team1,2,3,4,5,6 — 1Institut für Quantenoptik, LU Hannover — 2ZARM, Uni Bremen — 3Institut für Physik, HU Berlin — 4Institut für Quantenphysik, Uni Ulm — 5Institut für Angewandte Physik, TU Darmstadt — 6Institut für Physik, JGU Mainz
Atom interferometry based on Raman diffraction is a well-proven tool for precise measurements of gravity, rotation, and fundamental constants. While in free fall, Raman diffraction using a two photon process occurs in a single direction, under vanishing atomic velocity so-called symmetric double diffraction occurs by scattering four photons of a retro-reflected laser beam. We report on a novel realization of a compact and highly integrated laser system based on established telecom fiber technology, electro-optic modulation and frequency doubling for Raman double diffraction of 87Rb atoms. We efficiently drive Raman diffraction with this laser system and perform high contrast atom interferometry using delta-kick collimated condensed atoms generated on an atom chip.
Supported by DLR with funds provided by the BMWi under Grant No. DLR 50WM1552-1557 (QUANTUS-IV-Fallturm) and 50RK1957 (QGYRO), the VDI with funds provided by the BMBF under Grant No. VDI 13N14838 (TAIOL), the CRC 1227 DQmat within projects A05 and B07 and the QUEST-LFS. Funded by the DFG under Germany’s Excellence Strategy, EXC-2123-B02.