研究成果

国際会議

  • Quantum Secret Sharing Schemes and Reversibility of Quantum Operations
    著者
    T. Ogawa, A. Sasaki, M. Iwamoto, and H. Yamamoto
    会議名
    ISITA 2004
    ページ
    1440–1445
    発行年
    2021
    発表日
    Oct., 2004
    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.