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Q: Fachverband Quantenoptik und Photonik

Q 17: Quantengase: Bosonen Dynamik / Disorder

Q 17.3: Talk

Tuesday, March 3, 2009, 11:00–11:15, VMP 6 HS-A

Dynamics of Solitons in Bose-Einstein condensates — •Eva-Maria Richter¹, Christoph Becker¹, Parvis Soltan-Panahi¹, Mathis Baumert², Sören Dörscher¹, Simon Stellmer³, Jochen Kronjäger², Kai Bongs², and Klaus Sengstock¹ — ¹Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — ²MUARC, School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom — ³Institut für Quantenoptik und Quanteninformation Technikerstr. 21a A-6020 Innsbruck Austria, Europe

We present the results of numerical calculations solving the 1D Gross-Pitaevskii equation and discuss the dynamics of dark and dark-bright solitons in Bose-Einstein condensates, particularly with regard to their collisions [1,2]. By tracing phase and densitydistribution of the condensate during the interaction, several types of collisions, depending on the depths of the solitons, can be distinguished. We compared these simulations with our results of the experimental observations of dark and dark-bright solitons in Bose-Einstein condensates. [1] C. Becker et. al., Nature Physics 4, 496-501 (2008); [2] S. Stellmer et. al., Phys. Rev. Lett. 101, 120406 (2008)