Based on the continuous-variable GHZ states, an efficient ( n , n ) quantum secret sharing protocol is designed, where the Dealer can distribute the various shares to different participants at one time. Likewise, every participant can transfer the same message (share) to other participants simultaneously in the secret recovery process. In this way, the cost of time and quantum photons sharply decreases. What’s more, the proposed QSS is proved to be feasible in the terrible quantum channel with low transmission efficiency and be secure without any secret information leakage under the participant attack.

中文翻译：

---

基于连续可变 GHZ 状态的量子秘密共享

基于连续变量 GHZ 状态，设计了一种高效的 (n,n) 量子秘密共享协议，其中 Dealer 可以一次将各种份额分配给不同的参与者。同样，每个参与者都可以在秘密恢复过程中同时将相同的消息（共享）传输给其他参与者。通过这种方式，时间和量子光子的成本急剧下降。更重要的是，所提出的QSS被证明在传输效率低的可怕量子信道中是可行的，并且在参与者攻击下没有任何秘密信息泄漏是安全的。