摘要
我们在场一(n， n ) 用 Greenberger-Horne-Zeilinger 状态和远距传物的安全直接通讯的阀值量秘密分享计划。在保证量隧道的安全以后，发送者在粒子状态的一个序列上直接编码秘密消息并且由远距传物把它传给接收装置。接收装置能由把他们的测量结果与发送者相结合恢复秘密消息“ s 结果。如果一条完美的量隧道被使用，因为播送粒子顺序不带秘密消息，我们的计划是完全安全的。我们也证明我们的计划为噪音量隧道是安全的。
We present an （n, n） threshold quantum secret sharing scheme of secure direct communication using Greenberger-Horne-Zeilinger state and teleportation. After ensuring the security of the quantum channel, the sender encodes the secret message directly on a sequence of particle states and transmits it to the receivers by teleportation. The receivers can recover the secret message by combining their measurement results with the sender＇s result. Ira perfect quantum channel is used, our scheme is completely secure because the transmitting particle sequence does not carry the secret message. We also show our scheme is secure for noise quantum channel.
基金
The project supported by National Natural Science Foundation of China under Grant No. 60472032 We would like to express our thanks to the anonymous referee for his/her constructive remarks and suggestions for improving this paper.
