2005/01/24 by Hao Xiang, X. Hao, S. Zhu +1 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Amplitude damping channel #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum discord #Quantum entanglement #Quantum information #Quantum mechanics #Quantum teleportation #Qubit #Superdense coding #Teleportation #Topology (electrical circuits) #quant-ph
paper · pdf · doi:10.1016/j.physleta.2005.02.037
11 pages, 4 figures
arxiv created 2005/01/24 · openalex publication_date 2005/03/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Information transmission of two qubits through two independent 1D Heisenberg chains as a quantum channel is analyzed. It is found that the entanglement of two spin-\frac 12 quantum systems is decreased during teleportation via the thermal mixed state in 1D Heisenberg chain. The entanglement teleportation will be realized if the minimal entanglement of the thermal mixed state is provided in such quantum channel. High average fidelity of teleportation with values larger than 2/3 is obtained when the temperature \it T is very low. The mutual information I of the quantum channel declines with the increase of the temperature and the external magnetic field. The entanglement quality of input signal states cannot enhance mutual information of the quantum channel.