A NOTE ON SOME QUANTUM SECRET SHARING SCHEMES
We remark that the schemes [ S. Gaertner, C. Kurtsiefer, M. Bourennane and H. Weinfurter, Phys. Rev. Lett. 98 (2007) 020503; H. Takesue and K. Inoue, Phys. Rev. A 74 (2006) 012315; L. Hsu and C. Li, Phys. Rev. A 71 (2005) 022321; F. Yan and T. Gao, Phys. Rev. A 72 (2005) 012304; L. Xiao, G. Long, F. Deng and J. Pan, Phys. Rev. A 69 (2004) 052307; M. Hillery, V. Buzek and A. Berthiaume, Phys. Rev. A 59 (1999) 1829] are not secret sharing schemes as claimed.
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