Quantum teleportation via two qubit Heisenberg XY chain - Effects of anisotropy and magnetic field

Details Quantum teleportation via two qubit Heisenberg XY chain - Effects of anisotropy and magnetic field Quantum teleportation via two qubit Heisenberg XY chain - Effects of anisotropy and magnetic field

2004-07-17

arxiv.org/abs/quant-ph/0407137v1

Physics

Quantum Physics

12 pages, 1 figure

Scientific paper

In this paper, we study the influence of anisotropy on the usefulness, of the entanglement in a two-qubit Heisenberg XY chain at thermal equilibrium in the presence of an external magnetic field, as resource for quantum teleportation via the standard teleportation protocol. We show that the nonzero thermal entanglement produced by adjusting the external magnetic field strength beyond some critical strength is a useful resource. We also considered entanglement teleportation via two two-qubit Heisenberg XY chains.

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