基于稳定子码的在噪声信道的量子安全直接通信方案研究

Abstract

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.In this paper,aquantum secure direct communication protocol using GHZ state based on stabiliser codes theory is presented.Our protocol can not only maintain unconditional security,but also find and correct one quantum bit phase error,efficiently diminish the quantum bit error rate in noisy channel.