三粒子纠缠W态的隐形传态

Teleportation of a three-particle entangled W state through two-particle entangled quantum channels

提出利用三个二粒子纠缠态作为量子信道 ,实现三粒子纠缠W态的隐形传态的方案 .首先考察量子信道是最大纠缠态的情形 ,然后进一步考察量子信道是非最大纠缠态的情形 .发现在量子信道为非最大纠缠态时 ,通过引进一个辅助粒子 ,并构造一个幺正变换矩阵 ,即可以一定的概率完成三粒子纠缠W态的隐形传态 .

We propose a scheme for teleportation of a three-particle entangled W state through two-particle entangled quantum channels., Firstly, the maximally entangled states are taken as quantum channels, then, the case of nonmaximally entangled channels is considered. We find that when the channels are nonmaximally entangled states, by introducing an ancillary qubit and constructing an unitary transformation properly, teleportation of three-particle entangled W state can be implemented with certain probability.