Spin entanglement loss by local correlation transfer to the momentum
Abstract
We show the decrease of spin-spin entanglement between two s=1/2 fermions or two photons due to local transfer of correlations from the spin to the momentum degree of freedom of one of the two particles. We explicitly show how this phenomenon operates in the case where one of the two fermions (photons) passes through a local homogeneous magnetic field (optically-active medium), losing its spin correlations with the other particle.
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