Abstract
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.
Original language | English |
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Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | Journal of the Korean Physical Society |
Volume | 61 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2012 Jul |
Keywords
- Quantum communication network
- Quantum direct communication
- Quantum key distribution
- χ-type entangled state
ASJC Scopus subject areas
- Physics and Astronomy(all)