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 journalArticlepeer-review

    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

    Bibliographical note

    Funding Information:
    This research was supported by the MKE (The Ministry of Knowledge Economy), Korea, under the ITRC (Information Technology Research Center) support program (NIPA-2012-H0301-12-3007) supervised by the NIPA (National IT Industry Promotion Agency).

    Keywords

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

    ASJC Scopus subject areas

    • General Physics and Astronomy

    Fingerprint

    Dive into the research topics of 'Multi-user quantum network system and quantum communication using χ-type entangled states'. Together they form a unique fingerprint.

    Cite this