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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie

Q 57.11: Poster

Thursday, March 17, 2011, 16:30–19:30, P1

Quantum - classical correspondence and break-down of second Josephson oscillations — •Martin P. Strzys and James R. Anglin — Technische Universität Kaiserslautern, FB Physik, 67663 Kaiserslautern, Germany

A simple four-mode Bose-Hubbard model with intrinsic time-scale separation can can be considered as a paradigm for mesoscopic quantum systems in thermal contact. Bogoliubov excitations of the two-mode subsystems thereby behave similarly to second sound phenomenons in liquid Helium II and perform second Josephson oscillations. We will illuminate the quantum classical correspondence and the range of validity of this theory.