J4 ›› 2010, Vol. 27 ›› Issue (1): 41-46.

• Quantum Optics • Previous Articles     Next Articles

Scheme of three quantum bit secret sharing based on GHZ state

LIU Yue-Qi1, Shi-Jin2, HU Bao-Lin2, ZHANG Kun3   

  1. 1Department of Science and Technology, Huaiyin Normal University, Huaian 223300,China;
    2Department of physics, Huaiyin Normal University, Huaian 223300,China; 
    3Department of Computer, Nanjing University of Science and Technology, Nanjing 210094, China
  • Published:2010-01-28 Online:2009-12-30

Abstract:

With a five-particle entanglement GHZ state as the quantum channel, a quantum secret sharing scheme is proposed, which put through the three-particle teleportation in order to realize the three-quantum secret sharing. The safety of the scheme is analyzed. The scheme makes full use of five particles’ relationship of the GHZ-state. It is found that a Bell-basis measurement, three single particle measurement and corresponding unitary transformation are required. Compared with the pertinent literature, it enhances the quantum transmission without increasing the number of particles, and forms a theoretical basis for transmitting more quanta in quantum secret sharing.

Key words: quantum optics, quantum secret sharing, quantum entanlement, qunatum teleportation