多方控制的量子安全直接通信协议

基于单光子序列的顺序重排，提出了一种可应用于一些特殊的场景的多方控制的量子安全直接通信协议.协议中，接收方只有在得到所有控制方的同意之后，才能恢复出发送方的秘密消息.协议的安全性由量子不可克隆定理和单光子序列的秘密传输顺序所保证.此外，除了用于窃听检测的部分光子，所有的光子都用于编码秘密消息，而且协议的实现不需要使用纠缠态，该协议具有效率高和实现简单等特点. 关键词： 量子密码 量子安全直接通信 顺序重排 单光子

Multiparty controlled quantum secure direct communication protocol

Based on the order rearrangement of single photon sequence, we present a multiparty controlled quantum secure direct communication protocol. The present protocol can be applied to some special scenario. In the protocol, the sender's secret message can only be recovered by the receiver under the permission of all the controllers. The security for the protocol is ensured by the quantum no-cloning theorem and the secret transmitting order of the single photon sequence. Moreover, all photons are used to encode the secret message except those chosen for eavesdropping check and it is unnecessary for the protocol to use entanglement. Our protocol is efficient and practicable.