中文摘要：

量子秘密共享是量子密码研究的一个重要分支,针对多方共享量子比特情况进行研究,提出一个新的动态量子比特共享协议。此协议中,参与共享的成员是分等级的,量子信息的管理者在无需建立新的量子信道的情况下可对秘密重构系统中的参与者进行裁员。裁员后,管理者通过量子操作可以对量子信息进行更新,而剩余的有效参与者无需对自己手中的粒子执行额外操作就可完成新信息重构。此外,还讨论了协议的正确性、安全性及共享成员的等级性。

英文摘要：

Quantum secret sharing （QSS） is one important branch of quantum cryptography. Based on the studies of multi-shared quantum bits, a new dynamic quantum bit sharing protocol was proposed. The participation of the shared members is hierarchical in this protocol. The quantum information leader, in the absence of the establishment of a new quantum channel, can remove some of the participants in the secret reconstruction system. After the layoffs, the leader can also update the quantum information using quantum operations, and the remaining effective participants can recover the new quantum information without performing additional operations. In addition, the correctness, security and the hierarchy of the participants of the protocol were discussed.