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Q: Fachverband Quantenoptik und Photonik

Q 27: Poster: Quantum Optics and Photonics II

Q 27.5: Poster

Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof

Studying spin-dynamics in one dimension with BECs — •Maximilian Prüfer, Philipp Kunkel, Daniel Linnemann, Helmut Strobel, Wolfgang Müssel, Christian-Marcel Schmied, Thomas Gasenzer, and Markus K. Oberthaler — Kirchhoff-Institut für Physik, Im Neuenheimer Feld 227, 69120 Heidelberg

We use spin-changing collisions in ⁸⁷Rb as a experimentally precisely controllable method to couple the external and internal degrees of freedom. This non-linear process is investigated in a quasi one-dimensional trap geometry.

We discuss our experimental setup to investigate spatial correlations arising in the course of spin-mixing. We first characterise the microscopic process, which creates atom pairs with opposite momenta. For this the experimental techniques in controlling this non-linear mechanism are presented. Going into a parameter regime where many momentum modes are accessible, we detail the use of correlation functions to extract the arising spatial structures. Remarkably, we find general features independent of our initial preparation, which are compared to simulations based on the truncated Wigner approximation.