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A scheme for secure direct communication using EPR pairs and teleportation

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  • F. Yan
  • X. Zhang

Abstract

A novel scheme for secure direct communication between Alice and Bob is proposed, where there is no need for establishing a shared secret key. The communication is based on Einstein-Podolsky-Rosen (EPR) pairs and teleportation between Alice and Bob. After insuring the security of the quantum channel (EPR pairs), Bob encodes the secret message directly on a sequence of particle states and transmits them to Alice by teleportation. In this scheme teleportation transmits Bob’s message without revealing any information to a potential eavesdropper. Alice can read out the encoded messages directly by the measurement on her qubits. Because there is not a transmission of the qubit which carries the secret message between Alice and Bob, it is completely secure for direct secret communication if perfect quantum channel is used. Copyright Springer-Verlag Berlin/Heidelberg 2004

Suggested Citation

  • F. Yan & X. Zhang, 2004. "A scheme for secure direct communication using EPR pairs and teleportation," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 41(1), pages 75-78, September.
    • Handle: RePEc:spr:eurphb:v:41:y:2004:i:1:p:75-78
    DOI: 10.1140/epjb/e2004-00296-4
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