We demonstrate, both from a theoretical and an experimental point of view, the possibility of realizing a weak coupling between two Bose-Einstein condensates trapped in different Zeeman states. The weak coupling drives macroscopic quantum oscillations between the condensate populations and the observed current-phase dynamics is described by generalized Josephson equations. In order to highlight the superfluid nature of the oscillations, we investigate the response of a Rb-87 non-condensate (thermal) gas in the same conditions, showing that the thermal oscillations damp more quickly than those of the condensate.
Smerzi A., Trombettoni A., Lopez-Arias T., Fort C., Maddaloni P., Minardi F., et al. (2003). Macroscopic oscillations between two weakly coupled Bose-Einstein condensates. THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, 31(4), 457-461 [10.1140/epjb/e2003-00055-1].
Macroscopic oscillations between two weakly coupled Bose-Einstein condensates
Minardi F.;
2003
Abstract
We demonstrate, both from a theoretical and an experimental point of view, the possibility of realizing a weak coupling between two Bose-Einstein condensates trapped in different Zeeman states. The weak coupling drives macroscopic quantum oscillations between the condensate populations and the observed current-phase dynamics is described by generalized Josephson equations. In order to highlight the superfluid nature of the oscillations, we investigate the response of a Rb-87 non-condensate (thermal) gas in the same conditions, showing that the thermal oscillations damp more quickly than those of the condensate.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
