Observation of spinor dynamics in optically trapped 87Rb Bose-Einstein Condensates

Details Observation of spinor dynamics in optically trapped 87Rb Bose-Einstein Condensates Observation of spinor dynamics in optically trapped 87Rb Bose-Einstein Condensates

2003-09-06

arxiv.org/abs/cond-mat/0309164v2

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.92.140403

We measure spin mixing of F=1 and F=2 spinor condensates of 87Rb atoms confined in an optical trap. We determine the spin mixing time to be typically less than 600 ms and observe spin population oscillations. The equilibrium spin configuration in the F=1 manifold is measured for different magnetic fields and found to show ferromagnetic behavior for low field gradients. An F=2 condensate is created by microwave excitation from F=1 manifold, and this spin-2 condensate is observed to decay exponentially with time constant 250 ms. Despite the short lifetime in the F=2 manifold, spin mixing of the condensate is observed within 50 ms.

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