Abstract: A novel protocol for multiparty hierarchical remote state preparation (MHRSP) of arbitrary single-qubit state with multipartite entangled graph state as the channel is proposed. In the scheme, by using the feed-forward measurement strategy, a boss distributes a secret quantum state to two grades of agents asymmetrically, where the number of agents in both grades can be arbitrary in principle, and the agents who belong to different grades have different authorities for restoring the boss's secret. Further, this paper extends the above MHRSP protocol to obtain a scheme of multiparty hierarchical joint remote state preparation (MHJRSP). The presented two schemes involve no nonlocal operation. They are shown to be secure against eavesdropping, and expected to find useful applications in the real world.

Key words: remote state preparation, joint remote state preparation, hierarchical quantum communication, multi-qubit graph state, feed-forward measurement strategy

摘要： 提出一个以多粒子纠缠图态为量子信道的任意单量子态的多方分层远程态制备（MHRSP）的新协议。在该方案中，利用前馈测量策略，发送者将一个秘密量子态不对称地分配给两级代理，其中两级代理的人数原则上是可以任意的，并且不同级别的代理具有恢复发送者秘密的不同权限。进一步地，将上述MHRSP协议进行了推广，得到一个多方分层联合远程态制备（MHJRSP）方案。所提出的两个方案不涉及非局域操作，它们是安全而不被窃听的，期望能在现实世界中得到有效的应用。

关键词: 远程态制备, 联合远程态制备, 分层量子通信, 多量子图态, 前馈测量策略