Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 31: Poster: Quantum Optics and Photonics I
Q 31.32: Poster
Dienstag, 7. März 2017, 17:00–19:00, P OG1+2
Atom-chip interferometry with Bose-Einstein condensates — •Matthias Gersemann1, Sven Abend1, Martina Gebbe2, Holger Ahlers1, Hauke Müntinga2, Christian Schubert1, Wolfgang Ertmer1, Claus Lämmerzahl2, Ernst M. Rasel1, and the QUANTUS team1,2,3,4,5,6 — 1Institut für Quantenoptik, LU Hannover — 2ZARM, Uni Bremen — 3Institut für Physik, HU zu Berlin — 4Institut für Quantenphysik, Uni Ulm — 5Institut für Angewandte Physik, TU Darmstadt — 6Institut für Physik, JGU Mainz
The small spatial and momentum width of ultracold atoms such as Bose-Einstein condensates (BEC) makes them very well suited for high precision atom interferometry. In our atom-chip setup we generate a 87Rb BEC and are able to perform Bragg interferometry with high fidelity. Introducing a relaunch mechanism allows us to span a fountain geometry including all required atom-optical operations in a volume of less than a one centimeter cube. This geometry enables the operation of a quantum gravimeter based on a Mach-Zehnder type interferometer sequence with a free-fall time of T=25 ms. Additionally techniques like delta-kick collimation, Stern-Gerlach type deflection, higher-order and double Bragg beam splitters are studied in detail. This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) due to an enactment of the German Bundestag under grant numbers DLR 50WM1552-1557 (QUANTUS-IV-Fallturm).