Abstract: With the development of science and technology, the quantum private communication attracts attentions due to the unconditional security. As an important branch, the quantum key distribution (QKD) has developed rapidly, which has two ways: the discretevariable quantum key distribution (DVQKD) and the continuousvariable quantum key distribution (CVQKD). The CVQKD appears relatively late, but it has been developed rapidly in the past decades due to its own advantages. For CVQKD, many different protocols have been proposed, and been demonstrated from the aspect of the security. In order to verify the feasibility of these protocols, a large number of experiments have been carried out, and good achievements have been achieved, which greatly promote the development of the CVQKD technology. Base on the theory and experiments, the quantum key distribution network and its field experiment are studied. Meanwhile, the scientists have developed the prototype, which promote the applicability and the industrialization of the continuousvariable quantum secret communication technology.

摘要： 随着科学与技术的发展，量子保密通信以其高安全性等特点受到社会各界的关注，其核心是量子密钥分发(quantum key distribution, QKD).它有2种实现方式：离散变量量子密钥分发(discretevariable quantum key distribution, DVQKD)和连续变量量子密钥分发(continuousvariable quantum key distribution, CVQKD)，其中连续变量量子密钥分发技术出现时间相对较晚，但凭借其先天优势，近十几年来得到了迅速的发展.针对连续变量量子密钥分发技术与运用研究有许多不同的协议并从安全性方面对其进行了论证.为了验证这些协议的可实现性，开展了大量的实验研究并取得了可喜的成果，极大地推进了连续变量量子密钥分发技术的发展.在理论和实验的基础上研制出了样机产品，并通过实地实验研究了连续变量量子密钥分发网络，推动了连续变量量子保密通信技术的实用化和产业化.