Josephson oscillations in binary mixtures of F=1 spinor BECs

Details Josephson oscillations in binary mixtures of F=1 spinor BECs Josephson oscillations in binary mixtures of F=1 spinor BECs

2009-02-18

arxiv.org/abs/0902.3206v2

Phys. Rev. A 80, 023616 (2009)

Physics

Condensed Matter

Other Condensed Matter

Improved version. Accepted, Physical Review A

Scientific paper

10.1103/PhysRevA.80.023616

We analyze theoretically Josephson oscillations in a mixture of two Zeeman states of a spinor Bose-Einstein condensate in a double-well potential. We find that in the strongly polarized case, the less populated component exhibits a complex dynamics with an anti-Josephson behavior, i.e. oscillates in phase with the more populated one. In the balanced population case the Josephson oscillations unveal a dependence with the different spin collision channels. This effect could be used to experimentally measure the distinct scattering lengths entering in the description of a spinor condensate. Our numerical results are in close agreement with an analytical description of the binary mixture using a two mode model.

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