基于W态的量子秘密共享协议

基于W态及其非定域纠缠关联性，利用量子远程通信设计了一种量子秘密共享协议。在该协议中，Alice制备三粒子W态及秘密量子信息，将W态中的任意两粒子分别发送给Bob1和Bob2，并对自己拥有的粒子进行Bell基联合测量；依据Alice的测量结果，Bob1和Bob2联合进行相应的局域操作就能共同得到秘密信息。并对协议的安全性进行了详细分析，研究表明该协议能抵御多种攻击，如干扰重发攻击、纠缠攻击等。

Quantum secret sharing protocol based on W state

Based on the non-locality entanglement correlation of the W state, a quantum secret sharing protocol is proposed by utilizing the quantum teleportation. In the proposed protocol, Alice prepares a three-particle W state, and sends any two-particle of the W state to Bob1 and Bob2, respectively, then performs Bell bases joint measurement on her own particles; according to the Alice's measurement result, Bob1 and Bob2 can jointly obtain the secret information by performing the corresponding local operations. What’s more, the security of the proposed protocol is analyzed in detail. It is shown that the proposed protocol can resist many attacks, such as the intercept-resend attack, the entanglement-and-measure attack, etc.