学術論文誌
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Quantum Secret Sharing Schemes and Reversibility of Quantum Operations
- 著者
- T. Ogawa, A. Sasaki, M. Iwamoto, and H. Yamamoto
- 雑誌名
- Physical Review A
- 巻
- 72
- 号
- 3
- 出版社
- APS Physics
- 発行年
- 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.