Berlin 2014 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology
Q 16.67: Poster
Montag, 17. März 2014, 16:30–18:30, Spree-Palais
A miniaturized, high flux BEC source for precision interferometry — Alexander Grote1, Klaus Sengstock1, and •The QUANTUS Team1,2,3,4,5,6,7,8,9 — 1Institut für Laserphysik, Universität Hamburg — 2Institut für Quantenoptik, Universität Hannover — 3ZARM, Universität Bremen — 4Institut für Physik, HU Berlin — 5Institut für Quantenphysik, Universität Ulm — 6Institut für angewandte Physik, TU Darmstadt — 7MURAC, University of Birmingham — 8FBH, Berlin — 9MPQ, Garching
Atom chips have proven to be excellent sources for the fast production of ultra-cold gases due to their outstanding performance in evaporative cooling. However, the total number of atoms has previously been limited by the small volume of their magnetic traps. To overcome this restriction, we have developed a novel loading scheme that allows us to produce Bose-Einstein condensates of 4x105 87Rb atoms every 1.6 seconds. Ensembles of 1x105 atoms can be produced with 1Hz repetition rate. The apparatus is designed to be operated under microgravity at the drop tower in Bremen, where even higher numbers of atoms can be achieved due to the absence of any gravitational sag.
Using the drop tower’s catapult mode, our setup will perform atom interferometry during nine seconds in free fall. Thus, the fast loading scheme allows for interferometer sequences of up to seven seconds – interrogation times which are inaccessible for ground based devices.
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 50WM1131.