Publications

Journal Articles

  • Quantum Secret Sharing Schemes and Reversibility of Quantum Operations
    Author(s)
    T. Ogawa, A. Sasaki, M. Iwamoto, and H. Yamamoto
    Journal
    Physical Review A
    Vol.
    72
    No.
    3
    Publisher
    APS Physics
    Publication Year
    2005
    Abstract

    Quantum secret sharing schemes encrypting a quantum state into a multipartite entangled state are treated. The lower bound on the dimension of each share given by Gottesman [Phys. Rev. A 61, 042311 (2000)] is revisited based on a relation between the reversibility of quantum operations and the Holevo information. We also propose a threshold ramp quantum secret sharing scheme and evaluate its coding efficiency.