基于纠缠交换技术的量子秘密共享协议设计与分析

由于实际量子信道环境具有可变性,导致传统量子秘密共享协议的安全系数较低,为此提出基于纠缠交换技术的量子秘密共享协议设计与分析。利用纠缠交换技术对Bell态进行纠缠交换,对协议门限进行描述;通过编码搭建了一个无噪声的搭线窃听量子信道,以此实现基于纠缠交换技术的量子秘密共享协议设计。经实验证明,此次设计的协议安全系数高于传统协议方案。

Cascade quantum teleportation

In this letter a cascade quantum teleportation scheme is proposed.The proposed scheme needs less local quantum operations than those of quantum multi-teleportation.A quantum teleportation scheme based on entanglement swapping is presented and compared with the cascade quantum teleportation scheme.Those two schemes can effectively teleport quantum information and extend the distance of quantum communication.