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arXiv · 0902.3206

Josephson oscillations in binary mixtures of F=1 spinor BECs

B. Julia-Diaz·M. Guilleumas·M. Lewenstein·A. Polls·A. Sanpera
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Abstract

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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B. Julia-Diaz, M. Guilleumas, M. Lewenstein, A. Polls, A. Sanpera. 2009-02-18. Josephson oscillations in binary mixtures of F=1 spinor BECs. https://doi.org/10.1103/physreva.80.023616

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