基于蝶型网络模型的量子网络编码

Quantum network coding based on butterfly network

为了解决量子网络中存在的传输率低、信道利用率不高的问题,将经典网络编码的思想引入量子网络,基于蝶型网络模型,提出了传输经典信息和未知量子态的两种量子网络编码方案,从而有效提高了网络的整体性能,实现量子网络上的最大流传输;而且,所有的信道均采用量子信道,并创新性地提出利用量子态作为寄存器实现经典信息的传递,很好地增强了方案的安全性。

Based on the typical example of butterfly network,this paper promoted a quantum network coding scheme including the transmission of classical information and the unknown qubit.It improved effectively the overall performance of the network which could achieve the maximizing information transmission in quantum network.Remarkably,here it did not require classic channel,only had quantum channel.It mad use of qubit as register to transmit classical information.No matter what send was unknown qubit or classical bit,both could be encoded with register and decoded without classical assistant information.It＇s effective to improve security of this scheme.