两方与两方之间的量子秘密共享

Quantum secret sharing with two parties and two parties

提出一个利用二粒子纠缠态|Φ^+〉并结合纠缠转换的两方与两方之间的量子秘密共享方案。在方案进行过程中多次进行信道安全性检测,且共享密钥的四方相互制约,两两合作才可获得共享密钥,进一步保证了信道的安全性及共享密钥的可用性。

A protocol of quantum secret sharing between two parties and two parties using two-particle entanglement states and entanglement swapping is presented in this paper. The protocol carries on examination to the eavesdropper for many times, furthermore, the four parties mutually restrict each other, and the shared keys can be obtained only if Alicel-Alice2 or Bob 1-Bob2 cooperate, so that it can promise the safeness of channel and the usability of the shared keys.