均匀磁场下含DM作用海森堡模型热纠缠传态

Thermal Entanglement and Teleportation in Heisenberg Model with Dzyaloshinski-Moriya Anisotropic Antisymmetric Interaction in a Homogeneous Magnetic Field

研究了在外加均匀磁场下,含有D-M相互作用的两量子比特海森堡XXZ模型的热纠缠及隐形传态;通过计算得出模型的纠缠度和输出态的纠缠度以及传态的保真度,分析了D-M相互作用常数、温度、磁场、自旋耦合常数、各向异性参数对纠缠度和保真度的影响.

The thermal entanglement of a two-qubit XXZ Heisenberg model in the presence of Dzyaloshinski-Moriya anisotropic antisymmetric interaction in a homogeneous magnetic field is studied, and this model is used as the quantum channel to teleport a two-qubit pure state, then the entanglement of teleported state and the average fidelity of teleportation are calculated. Finally the influences on the entanglement of outper states and average fidelity in terms of the D-M coupling constant, spin coupling constant, anisotropy parameter, matznetic induction and temperature zre di^c,~oct