Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 15: Poster: Quantum Optics and Photonics I
Q 15.37: Poster
Monday, March 23, 2015, 17:00–19:00, C/Foyer
Dynamical universal properties of one-dimensional split condensates — •Sebastian Erne1,2,4, Valentin Kasper1, Jürgen Berges1, Thomas Gasenzer1,2,3, and Jörg Schmiedmayer4 — 1Institut für Theoretische Physik, Ruprecht-Karls-Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany — 3Kirchhoff-Institut für Physik, INF 227, 69120 Heidelberg, Germany — 4Vienna Center for Quantum Science and Technology (VCQ), Atominstitut, TU Wien, Vienna, Austria
The recent measurement of higher-order phase correlation functions enables a precise examination of non-Gaussian correlations in the relative phase of two one-dimensional quasicondensates. This shows the necessity of refined non-pertubative theoretical descriptions of split condensates. For these systems the early time evolution of squeezed states is well described by a quadratic theory. In this work we investigate how the linear coupling between two one-dimensional Bose gases controls the non-Gaussian contributions. The subsequent quench of this control parameter can proceed in two directions: Increasing or decreasing the non-gaussianity of the systems as compared to the initial state. Finally we report on universal properties of the dynamics of higher-order correlation functions.