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arXiv · 0712.4349

Entanglement propagation through spin chains in the presence of a staggered magnetic field

R. H. Crooks·D. V. Khveshchenko
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Abstract

We study the dynamics of entanglement in the XY spin chain subject to a staggered magnetic field and contrast it to the previously studied uniform field case. We find that, depending on parameter values, a staggered field can provide better conditions for a perfect entanglement transfer, while even a modest amount of exchange anisotropy appears to have a strong detrimental effect. We also study interactions between different waves of entanglement and assess the possibility of simultaneous transmission of multiple bits of quantum information.

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R. H. Crooks, D. V. Khveshchenko. 2007-12-28. Entanglement propagation through spin chains in the presence of a staggered magnetic field. https://doi.org/10.1103/physreva.77.062305

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