Channels Concurrence and Quantum Teleportation
Concurrence can measure the entanglement property of a system. If the channel is a pure state, positive concurrence state can afford the good performance in the teleportation process. If the channel ia a mixed state, positive concurrence state cannot assure the good performance in the teleportation. The conditions of the positive concurrence and the quantum teleportation in the Heisenberg spin ring is derived.
作 者： LING Yin-Sheng 作者单位： Department of Physics, Suzhou University, Suzhou 215006, China 刊 名： 理论物理通讯（英文版） ISTIC SCI 英文刊名： COMMUNICATIONS IN THEORETICAL PHYSICS 年，卷(期)： 2005 43(1) 分类号： 关键词： concurrence quantum telportation entanglement mixed state Heisenberg spin ring