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

Chang Ho Hong, Jin O. Heo, Jong In Lim, Hyung Jin Yang

Research output: Contribution to journalArticle

12 Citations (Scopus)

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 languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of the Korean Physical Society
Volume61
Issue number1
DOIs
Publication statusPublished - 2012 Jul 1

Keywords

  • χ-type entangled state
  • Quantum communication network
  • Quantum direct communication
  • Quantum key distribution

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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