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

2004/07/17 by Ye Yeo, Tongqi Liu, Yeo, Ye +5
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Quantum Information and Cryptography #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #quant-ph

paper · pdf · doi:10.48550/arxiv.quant-ph/0407137

12 pages, 1 figure

arxiv created 2004/07/17 · openalex publication_date 2004/07/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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.

Related

• Magnetic field effects on the optimal fidelity of standard teleportation via the two qubits Heisenberg XX chain in thermal equilibrium
• Quantum teleportation via two-qubit Heisenberg XYZ chain
• Anisotropy and Magnetic Field Effects on the Genuine Multipartite Entanglement of Multi-Qubit Heisenberg \it XY Chains
• Thermal entanglement in the two-qubit Heisenberg XYZ model
• Enhancing fidelity in teleportation of a two-qubit state via a quantum communication channel formed by spin-1/2 Ising-Heisenberg trimer chains due to a magnetic field