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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics V
Q 62.30: Poster
Donnerstag, 8. März 2018, 16:15–18:15, Redoutensaal
Atom-chip-based interferometry with Bose-Einstein condensates — •Martina Gebbe1, Matthias Gersemann2, Sven Abend2, Sven Herrmann1, Claus Lämmerzahl1, Ernst M. Rasel2, and The QUANTUS Team1,2,3,4,5,6 — 1ZARM, Uni Bremen — 2Institut für Quantenoptik, LU Hannover — 3Institut für Physik, HU Berlin — 4Institut für Quantenphysik, Uni Ulm — 5Institut für Angewandte Physik, TU Darmstadt — 6Institut für Physik, JGU Mainz
Atom interferometry is a well-proven tool to measure inertial forces or fundamental constants with high accuracy. Bose-Einstein condensates (BECs) or delta-kick collimated (DKC) atoms present ideal sources for precise measurements due to their small spatial and momentum width. We generate such an ensemble in a miniaturized atom-chip setup, where BEC generation and DKC can be performed fast and reliably. We present new results on our atom-chip-based gravimeter, which takes place in a volume of a one centimeter cube and comprises an innovative fountain scheme to enhance the device's sensitivity. The relaunch mechanism consists of the combination of double Bragg diffraction with Bloch oscillations. The same techniques are employed in our symmetric scalable large momentum beam splitters, which can be used in long baseline interferometry. This work is supported by the CRC 1128 geo-Q and by the German Space Agency (DLR) with funds provided by the Federal Ministry of Economic Affairs and Energy (BMWi) due to an enactment of the German Bundestag under Grant No. DLR 50WM1552-1557 (QUANTUS-IV-Fallturm).