A quantum network system of QSS-QDC using χ-type entangled states

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

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    A multiuser 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, and therefore only N quantum lines are necessary for 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 is then analyzed.

    Original languageEnglish
    Article number050303
    JournalChinese Physics Letters
    Volume29
    Issue number5
    DOIs
    Publication statusPublished - 2012 May

    ASJC Scopus subject areas

    • General Physics and Astronomy

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