E. Nicklas, T. Zibold, H. Strobel, W. Müssel, M. Höfer, M.K. Oberthaler
Kirchhoff Institut für Physik, University Heidelberg, 69120 Heidelberg,
Germany
We report on our recent experimental results obtained in the context of
bosonic internal Josephson junctions which allow for the realization of a
classical bifurcation scenario. The classical [1] as well as the quantum
dynamics is experimentally investigated in the situation of a single
external mode and the results are in good agreement with the theoretical
expectations. By adding external degrees of freedom a situation can be
reached where the dynamics in a quench through the associated quantum
phase transition can be studied [2]. We will present our latest results on
scaling of the excitations generated by quenching through a critical point
with different speeds and compare with the expectation given by the Kibbel
Zurek mechanism.
[1] Zibold, Tilman, Eike Nicklas, Christian Gross, und Markus Oberthaler.
“Classical Bifurcation at the Transition from Rabi to Josephson Dynamics“.
Physical Review Letters 105, 204101 (2010).
[2] Jacopo Sabbatini, Wojciech H. Zurek, and Matthew J. Davis
“Phase Separation and Pattern Formation in a Binary Bose-Einstein
Condensate”,
Physical Review Letters 107, 230402 (2011)