2009/02/28 by Bruno Juliá-Díaz, B. Julia-Diaz, M. Guilleumas +5 · 2 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #Strong Light-Matter Interactions #cond-mat.other
paper · pdf · doi:10.1103/physreva.80.023616
published as Phys. Rev. A 80, 023616 (2009) · Improved version. Accepted, Physical Review A
arxiv created 2009/07/30 · openalex publication_date 2009/08/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 unveil 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.