Abstract.
We investigate the relation between quantum states and classical fixed-point bifurcations in a coupled two-component Bose-Einstein condensate (BEC). It is shown that the classical bifurcations are closely related to a topological change of the corresponding quantum levels, and such a structure change can be manifested in the entanglement properties of the corresponding quantum states. That is, the entanglement of the quantum states displays some peaks near the classical bifurcation points.
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Xie, Q., Hai, W. Quantum entanglement and classical bifurcations in a coupled two-component Bose-Einstein condensate. Eur. Phys. J. D 39, 277–282 (2006). https://doi.org/10.1140/epjd/e2006-00103-6
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DOI: https://doi.org/10.1140/epjd/e2006-00103-6