给出了一类两粒子纠缠混合态在LOCC条件下的克隆的充要条件。进一步发现此类混合态不能在局部操作和经典通讯(LOCC)条件下被分辨,这意味着混合态的局部克隆与局部分辨跟纯态的局部克隆与局部分辨有本质的差别。
A necessary and sufficient condition for perfect cloning of non-local orthogonal entangled mixed states using only local operations and classical communication (LOCC) is shown in this paper. And then we find that these mixed states can not be discriminated by LOCC. This means that the relation between local distinguishability and local copiability for orthogonal entangled mixed states differs from that of pure states.