Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 75: Matter Wave Optics II
Q 75.1: Talk
Friday, March 27, 2015, 14:30–14:45, K/HS2
QUANTUS 2 - a matter wave interferometer in extended free fall — •Christoph Grzeschik1, Achim Peters1,2, and the QUANTUS Team1,2,3,4,5,6,7,8,9 — 1Institut für Physik, Humboldt-Universität zu Berlin — 2Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Berlin — 3IQO, Leibniz Universität Hannover — 4ZARM, Universität Bremen — 5ILP, Universität Hamburg — 6Institut für Physik, Johannes Gutenberg-Universität — 7Institut für Quantenphysik, Universität Ulm — 8Institut für angewandte Physik, TU Darmstadt — 9MPQ, Garching
Inertial sensors based on cold atoms are an outstanding tool for fundamental physics research under microgravity such as testing the Einstein equivalence principle. Here we present the first results of our apparatus after drops and catapult shots in the Bremen drop tower. During a microgravity time of 9s the apparatus is capable of subsequently producing and performing experiments with up to four 87 Rb BECs. During the first drop and catapult campaigns we found that the position and dynamics of the atoms closely follow the predictions made by an extensive simulation of our magnetic chip. By implementing magnetic lensing we will be able to demonstrate atom interferometry with unprecedented interrogation times. For future campaigns the setup will be modified to produce mixtures of both Rubidium and Potassium for dual species atom interferometry.
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 DLR 50WM1131-1137.