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Maximal entanglement of two spinor Bose-Einstein condensates

Michael W. Jack·Makoto Yamashita
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Abstract

Starting with two weakly-coupled anti-ferromagnetic spinor condensates, we show that by changing the sign of the coefficient of the spin interaction, $U_{2}$, via an optically-induced Feshbach resonance one can create an entangled state consisting of two anti-correlated ferromagnetic condensates. This state is maximally entangled and a generalization of the Bell state from two anti-correlated spin-1/2 particles to two anti-correlated spin$-N/2$ atomic samples, where $N$ is the total number of atoms.

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Michael W. Jack, Makoto Yamashita. 2005-01-19. Maximal entanglement of two spinor Bose-Einstein condensates. https://doi.org/10.1103/physreva.71.033619

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