一次一密经典通信方式存在密钥丢失的风险,在传输大量数据时密钥会很快消耗完,不适于大数据经典通信,同时量子隐形传态由于要区分四个Bell态,实现起来比较困难。考虑到量子信道不仅能传输量子信息,还可以传输经典信息,提出将量子隐形传态看作量子信道,进而传输经典信息序列。在传输的过程中将待传输的信息0和1分别编码为计算基矢态|0>和|1>,这样在保证安全性的基础上可以不停地生成密钥,适用于大数据通信,同时此方案只需区分两种Bell态,实现起来比较容易。

The classical one-time-pad communication method exhibits the disadvantage of key loss and the shortcoming that the key will be quickly exhausted when a large amount of data is transmitted, making it unsuitable for classical big data communication. Further, it is difficult to distinguish the four Bell states in quantum teleportation. This study considers quantum teleportation as a quantum channel that transmits classical information sequences because quantum channels not only transmit quantum information but also classical information. The transmitted data 0 and 1 are encoded as quantum states |0> and |1>, respectively. The proposed scheme can continuously ensure security and generate keys, which is suitable for big data communication. Furthermore, this scheme only needs to distinguish between two kinds of Bell states, which can be easily implemented.