Abstract

The improvement and extension of quantum secret sharing (QSS) using orthogonal product states (OPS) are studied in this paper. Based on such three typical schemes, a quantitative analysis on security is provided. The paper also discusses the simplification measures and their effect on security, and then the possibility to extend is proved. Finally, several conclusions about the methods to improve the security, simplify the schemes and extend to one-to-many situation are given.

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