摘要
量子安全直接通信是继量子密钥分配后,量子通信领域又一重要的研究领域,它要求通信双方在预先不需要建立共享密钥的情况下就可以实现消息的保密传输。不同于属于非确定通信的量子密钥分配,量子直接通信受信道噪声的影响更大,需要更好的检错纠错能力。本文根据稳定子码纠错理论和GHZ三态纠缠粒子的特性提出了一套基于稳定子码理论的量子直接通信方案,使其在保持无条件安全性的基础上可以对单量子的相位和比特错误进行纠错检错,大大降低了信道的整个通信过程的量子比特错误率。
The notion of quantum secure direct communication（QSDC） has been introduced recently in quantum as a supplement for quantum key distribution, in which Alice and Bob exchange messages secure classical message without establishing any shared keys previously. Differ from quantum key distribution, as a kind of deterministic communication, QSDC is more easily affected by the noisy channel, in this case we need stronger error correction method in QSDC. protocol using GHZ state based on stabilis unconditional security, but also find and quantum bit error rate in noisy channel. In this paper, a quantum secure direct communication er codes theory is presented. Our protocol can not only maintain correct one quantum bit phase error, efficiently diminish the
出处
《量子光学学报》
CSCD
北大核心
2014年第3期187-191,共5页
Journal of Quantum Optics
基金
国家自然科学基金(Grant Nos.61179029)
关键词
量子直接通信
稳定子码
噪声信道
quantum secure direct communication
stabilizer codes
noisy channel
