Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 34: Poster 1

Q 34.66: Poster

Dienstag, 13. März 2012, 16:30–19:00, Poster.I+II

Matter-wave interferometry with Bose-Einstein condensates within the scaling approximation — •Wolfgang Zeller1, Stefan Arnold1, Stephan Kleinert1, Endre Kajari1,2, Vincenzo Tamma1, Albert Roura1, Wolfgang P. Schleich1, and the QUANTUS-TEAM3,4,5,6,7,8,9,101Institut für Quantenphysik, Universität Ulm — 2Theoretische Physik, Universität des Saarlandes — 3Institut für Quantenoptik, LU Hannover — 4ZARM, Universität Bremen — 5Institut für Physik, HU Berlin — 6Institut für Laser-Physik, Universität Hamburg — 7Institut für angewandte Physik, TU Darmstadt — 8Midlands Ultracold Atom Research Centre, University of Birmingham, UK — 9FBH, Berlin — 10MPQ, Garching

The prospect of atom interferometers in space opens up an avenue for tests of the equivalence principle with unprecedented precision. In this context, Bose-Einstein condensates (BECs) represent a promising source for matter-wave interferometry. Building upon a generalization of the common scaling approach which has been successfully employed to describe the long-time evolution of a BEC in microgravity [1], we analyze the interference pattern by coherently superimposing different macroscopic wave functions. We apply this method to study the interference of BECs in several scenarios and compare our results to numerical simulations based on the Gross-Pitaevskii equation.

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 50WM1136.

[1] T. van Zoest et al., Science 328, 1540 (2010).

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