Bonn 2010 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 6: Experimente zur Gravitation 2
GR 6.3: Vortrag
Dienstag, 16. März 2010, 14:40–15:00, JUR K
Applications of Bose-Einstein-Condensates in microgravity — •Hauke Müntinga1, Claus Lämmerzahl1, Sven Herrmann1 und das QUANTUS Team1,2,3,4,5,6 — 1ZARM, Universität Bremen — 2Institut für Quantenoptik, LU Hannover — 3Institut für Physik, HU Berlin — 4Institut für Laserphysik, Universität Hamburg — 5Institut für Quantenphysik, Universität Ulm — 6MPQ, München
We report on the current status of the QUANTUS free fall BEC experiment at the ZARM drop tower in Bremen.
After the first realization of a BEC in microgravity in 2007, we were able to observe condensates after 1 s of free evolution. The extremely shallow traps possible in microgravity and resulting ultralow temperatures of a few nK allow for further studies ranging from coherence properties of condensates to inertial sensors based on matter waves.
In our talk we will focus on the implementation of a matter wave interferometer into our apparatus, which aims to extend measurement times to unprecedented durations and sensitivities. This leads the way to high precision measurements of gravitational forces and eventually a quantum test of Einstein’s weak equivalence principle. Phenomena like quantum reflection and Anderson localization can also be examined with our apparatus. These goals are worked on in close cooperation with QUEST and the project PRIMUS.
The QUANTUS project is supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant number DLR 50WM0836.