DPG Phi
Verhandlungen
Verhandlungen
DPG

Darmstadt 2008 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 60: Quantengase (Gemische / Tunneleffekte)

Q 60.8: Vortrag

Freitag, 14. März 2008, 12:45–13:00, 3G/H

A coherent single atom shuttle between two Bose-Einstein condensates — •Uwe R. Fischer1, Christian Iniotakis2, and Anna Posazhennikova31Institut für Theoretische Physik, Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany — 2ETH Zürich, Institut für Theoretische Physik, CH-8093 Zürich, Switzerland — 3Physikalisches Institut, Universität Bonn, D-53115 Bonn, Germany

We study an atomic quantum dot representing a single hyperfine “impurity” atom which is coherently coupled to two well-separated Bose-Einstein condensates, in the limit when the coupling between the dot and the condensates dominates the inter-condensate tunneling coupling. It is demonstrated that the quantum dot by itself can induce coherent oscillations of the particle imbalance between the condensates, which display a two-frequency behavior. For noninteracting condensates, we provide an approximate solution to the coupled nonlinear equations of motion which allows us to obtain these two frequencies analytically.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2008 > Darmstadt