Netinfo Security ›› 2016, Vol. 16 ›› Issue (1): 24-28.doi: 10.3969/j.issn.1671-1122.2016.01.005

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Research on Quantum Information Sharing of a Three-particle Entangled State via a GHZ State

Wei GUO1, Shucui XIE2, Jianzhong ZHANG1(), Hongzhen DU3   

  1. 1. School of Mathematics and Information Science, Shaanxi Normal University, Xi’an Shaanxi 710119, China
    2. School of Science, Xi'an University of Posts and Telecommunications, Xi’an Shaanxi 710119, China
    3. Mathematics Department, Baoji University of Art and Science, Baoji Shaanxi 721007, China
  • Received:2015-11-16 Online:2016-01-01 Published:2020-05-13

Abstract:

Quantum information sharing is a technology that can transmit quantum state, which may carry information, from a sender Alice to a receiver Bob by using the property of quantum entanglement. This paper proposes a quantum information sharing scheme of a three-particle entangled state by using a four-particle Greenberge-Horne-Zeilinger (GHZ) state. Firstly Alice applies three times controlled-NOT (CNOT) gates and a Hadamard gate to her corresponding qubits. Then she performs a four-particle computation basis measurement on her qubits. Finally Bob can reconstruct the shared three-particle entangled state successfully by doing an appropriate unitary transformation on his corresponding qubits according to the measurement results from Alice. The scheme can be easily generalized to share a n-particle entangled state by using (n+1)-particle GHZ state as a quantum channel.

Key words: quantum communication, CNOT gate, unitary transformation, computation basis measurement, quantum circuit model

CLC Number: