Multi-user quantum network system and quantum communication using χ-type entangled states

被引：0
|
作者：
Chang Ho Hong
Jin O. Heo
Jong In Lim
Hyung Jin Yang
机构：
[1] Korea University,Graduate School of Information Management and Security
[2] Korea University,Center for Information Security Technologies (CIST)
[3] Korea University,Department of Physics
[4] Korea University,Graduate School of Information Security (GSIS)
来源：
Journal of the Korean Physical Society | 2012年 / 61卷
关键词：
Quantum communication network; Quantum direct communication; Quantum key distribution; -type entangled state;
D O I：
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中图分类号：
学科分类号：
摘要：
A multi-user quantum direct communication network system for N users utilizing χ-type entangled states is proposed. The network system is composed of a communication center, N users, and N quantum lines linking the center and the N users. There is no quantum line among users; therefore, only N quantum lines are necessary for the communication between users. Using one χ-type entangled state, in this protocol, we are able to send two bits of information through direct communication and, at the same time, share two bits of quantum keys. The security of the protocol will be analyzed.
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页码：1 / 5
页数：4
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