As the whole, it is found that, in Heisenberg XX model, the condition for the thermally quantum channel to teleport states with fidelity strictly greater than 2/3 is expectedly stronger than that for thermal concurrence to be nonzero.

• 通过具体的计算，我们发现在二量子比特海森堡XX模型中，保真度大于2/3的外界条件要比产生非零的纠缠度C所需的外界条件复杂。