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Article overview
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Spin-orbit-angular-momentum coupling in a spin-1 Bose-Einstein condensate | | Li Chen
; Han Pu
; Yunbo Zhang
; | | Date: |
19 Dec 2015 | | Abstract: | We propose a simple model with spin and orbit angular momentum coupling in a
spin-1 Bose- Einstein condensate, where three internal atomic states are Raman
coupled by a pair of co- propagating Laguerre-Gaussian beams. The resulting
Raman transition imposes a transfer of orbital angular momentum between photons
and the condensate in a spin-dependent way. Focusing on a regime where the
single-particle ground state is nearly three-fold degenerate, we show that the
weak interatomic interaction in the condensate produces a rich phase diagram,
and that a many-body Rabi oscillation between two quantum phases can be induced
by a sudden quench of the quadratic Zeeman shift. We carried out our
calculations using both a variational method and a full numerical method, and
found excellent agreement. | | Source: | arXiv, 1512.6276 | | Services: | Forum | Review | PDF | Favorites | |
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