题　目：Quantum secret sharing between multiparty and multiparty

主讲人：高亭 教授（河北师范大学）

时　间：5月25日（周三）13：30-15：30

地　点：信息工程学院 350室

报告内容：

?? Secret sharing is a powerful technology in computer science, which enables secure and robust communication in information networks, such as the internet, telecommunication systems and distributed computers. The security of these networks can be enhanced using quantum resources to protect the information. Such schemes have been termed quantum secret sharing. In this talk I will present some of our quantum secret sharing schemes between an m-party group and an n-party group. The secret message shared by all members of group 1 is shared by all members of group 2 in such a way that no subset of each group is efficient to read the secret message, but the entire set not only group 1 but also group 2 is.Besides, ????????I will also present some of our quantum secure direct communication schemes, in which the two parties communicate important messages directly without first establishing a shared secret key to encrypt them and the message is deterministically sent through the quantum channel, but can be read only after the transmission of an additional piece of classical information for each qubit.

主讲人简介：

??? 高亭，博士，二级教授，博士生导师，河北省有突出贡献的中青年专家，享受国务院政府特殊津贴专家，河北省省管优秀专家。2008年获河北省自然科学一等奖（排名第一）。获中国物理学会2012年度“最有影响论文奖”一等奖（第一完成人）。从事量子信息与量子计算研究，已在Physical Review Letters等期刊上发表SCI论文40篇，SCI 他引＞860次。一篇被评为英国物理学会17篇最佳优秀论文之一。主持国家自然科学基金三项、教育部科学技术研究重点项目一项、河北省自然科学基金四项。作为客座教授或访问学者分别在美国俄勒冈大学，加拿大多伦多大学，德国马普量子光学所访学一年。

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