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

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

2007-12-28

arxiv.org/abs/0712.4349v1

Phy. Rev. A77, 062305 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

Latex, 4+ pages

Scientific paper

10.1103/PhysRevA.77.062305

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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