Spinor BECs in a double-well: population transfer and Josephson oscillations

Details Spinor BECs in a double-well: population transfer and Josephson oscillations Spinor BECs in a double-well: population transfer and Josephson oscillations

2009-09-03

arxiv.org/abs/0909.0652v1

Phys. Rev. A 80, 043622 (2009)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevA.80.043622

The dynamics of an F=1 spinor condensate in a two-well potential is studied within the framework of the Gross-Pitaevskii equation. We derive two-mode equations relating the population imbalances, the phase differences among the condensates at each side of the barrier and the time evolution of the different Zeeman populations for the case of small population imbalances. The case of zero total magnetization is scrutinized in this limit demonstrating the ability of a two mode analysis to describe to a large extent the dynamics observed in the Gross-Pitaevskii equations. It is also demonstrated that the time evolution of the different total populations fully decouples from the Josephson tunneling phenomena. All the relevant time scales are clearly identified with microscopic properties of the atom-atom interactions.

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