Quantum teleportation in a three-qubit Heisenberg chain with Dzyaloshinsky–Moriya interaction

Abstract

The quantum teleportation via thermally entangled states of three-qubit Heisenberg spin chains with Dzyaloshinsky-Moriya (DM) interactions under a homogeneous magnetic field has been investigated. It is found that average fidelity and critical temperature depend on not only temperature, magnetic field, but also coupling coefficients, and DM interactions. What is more, we also find that average fidelity has little to do with entanglement.