The security of quantum key distribution using the real system and the foundation of quantum

在这项研究中，我们准备了两个主题作为一个地向性，以达到研究主题。一个是“利用真实系统进行量子密钥分发的安全性”，另一个是“量子信息论的基础”。如果它说的是真实的系统，量子信息理论的情况将在研究过程中完成显著的变化。特别是量子密钥分配系统到达了应用领域。并对系统的相关软件进行了说明。因此，我们提出了两个重要的研究成果。一种是“使用周相干量子信息和量子擦除信道”下的安全QKD协议。另一种是同时实现隐私放大的纠错系统。在后一个主题上，我们将其他量子协议放入研究领域，并且我们已经猜到了我们应该如何考虑目前的理论假设是重要的。特别地，我们评估并提出了量子比特承诺协议、带多光子协议的QKD协议。通过研究，我们得出结论，对量子纠缠态的可用性、量子态的实现、量子存储器的存在、量子信道模型的假设进行安排是构建安全量子协议的重要前提。

In this research, we prepared two themes as a geotropism which attains the research subject. One is "The security of quantum key distribution using the real system" and the other is "the foundation of quantum information theory".If it says about the real system, the situation of a quantum information theory will have accomplished the remarkable variation during the research.In particular, quantum key distribution system arrived at the region of utilization. And related software is remarked on the system.Therefore we propose two important research results. One is secure QKD protocol under "using week coherent quantum information and quantum erasure-channel". And another is error-correcting system that achieves privacy amplification simultaneously.On the later-subject, we put other quantum protocols into the research field, and we have guessed how we should consider the theoretical hypothesis to be important at present. In particular, we evaluated and proposed quantum bit commitment protocol, QKD protocol with multi-photon protocols. Though the researches, we conclude that it is important for construction of secure quantum protocols to arrange the assumption of availability of entanglement states, of realization of quantum states, of existence of quantum memory, of quantum channel models.