Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 37: Matterwave Optics I
Q 37.3: Vortrag
Mittwoch, 10. März 2010, 18:15–18:30, A 320
Bose-Einstein Condensation Experiments in Microgravity — •Stephan Tobias Seidel1, Ernst Maria Rasel1, and das QUANTUS Team1,2,3,4,5,6,7,8,9 — 1Institut für Quantenoptik, LU Hannover — 2ZARM, Uni Bremen — 3Institut für Physik, HU Berlin — 4Institut für Laserphysik, Uni Hamburg — 5Institut fÌr Quantenphysik, Uni Ulm — 6MPQ, München — 7Institut für angewandte Physik, TU Darmstadt — 8Midlands Ultracold Atom Research Centre, University of Birmingham, UK — 9FBH , Berlin
The successful demonstration of Bose-Einstein-Condensation in microgravity in 2007 opens the way to realize an atom interferometer operated in the unique environment of weightlessness. Within the QUANTUS project (Quantum systems under microgravity) an atom interferometer based on Rubidium 87 will be implemented in the drop tower at ZARM, Bremen. The apparatus produces a BEC of 104 atoms at a temperature of a few nK. In this regime it is possible to operate an interferometer with a coherent evolution on a timescale up to 1 second. The Mach-Zehnder atom interferometer is based on Bragg-scattering as a coherent beam splitter mechanism.
Furthermore, the produced BEC has a chemical potential of almost 10−31 J and a healing length on the order of 7 µm. These properties make it an ideal source for the study of quantum transport phenomena in disordered potentials.
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 numbers DLR 50 WM 0835 - 0839.