Efficient controlled quantum secure direct communication based on GHZ-like states

Efficient controlled quantum secure direct communication based on GHZ-like states In this paper, a three-party controlled quantum secure direct communication protocol based on GHZ-like state is proposed. In this scheme, the receiver can obtain the sender’s two secret bits under the permission of the controller. By using entanglement swapping, no qubits carrying secret messages are transmitted. Therefore, if the perfect quantum channel is used, the protocol is completely secure. The motivation behind utilizing GHZ-like state as a quantum channel is that if a qubit is lost in the GHZ-like state, the other two qubits are still entangled. The proposed protocol improves the efficiency of the previous ones. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Efficient controlled quantum secure direct communication based on GHZ-like states

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Publisher
Springer US
Copyright
Copyright © 2014 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-014-0866-z
Publisher site
See Article on Publisher Site

Abstract

In this paper, a three-party controlled quantum secure direct communication protocol based on GHZ-like state is proposed. In this scheme, the receiver can obtain the sender’s two secret bits under the permission of the controller. By using entanglement swapping, no qubits carrying secret messages are transmitted. Therefore, if the perfect quantum channel is used, the protocol is completely secure. The motivation behind utilizing GHZ-like state as a quantum channel is that if a qubit is lost in the GHZ-like state, the other two qubits are still entangled. The proposed protocol improves the efficiency of the previous ones.

Journal

Quantum Information ProcessingSpringer Journals

Published: Nov 12, 2014

References

  • Maximally efficient protocols for direct secure quantum communication
    Banerjee, A; Pathak, A
  • Multiparty quantum secret sharing of secure direct communication
    Zhang, ZJ
  • Multi-party quantum secret sharing with the single-particle quantum state to encode the information
    Chen, XB; Niu, XX; Zhou, XJ; Yang, YX

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