Quantum direct communication with authentication

Hwayean Lee, Jong In Lim, Hyungjin Yang

Research output: Contribution to journalArticle

180 Citations (Scopus)

Abstract

We propose two quantum direct communication (QDC) protocols with user authentication. Users can identify each other by checking the correlation of Greenberger-Horne-Zeilinger (GHZ) states. Alice can directly send a secret message to Bob without any previously shared secret using the remaining GHZ states after authentication. Our second QDC protocol can be used even though there is no quantum link between Alice and Bob. The security of the transmitted message is guaranteed by properties of entanglement of GHZ states.

Original languageEnglish
Article number042305
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume73
Issue number4
DOIs
Publication statusPublished - 2006 Apr 14

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

Cite this

Quantum direct communication with authentication. / Lee, Hwayean; Lim, Jong In; Yang, Hyungjin.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 73, No. 4, 042305, 14.04.2006.

Research output: Contribution to journalArticle

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