[1] Shamir A 1979 Commun. ACM 22 612

[2] Blakley G 1979 Proc. AFIPS 48 313

[3] Bennett C H and Brassard G and Mermin N 1992 Phys.
Rev. Lett. 68 557

[4] Ekert A K 1991 Phys. Rev. Lett. 67 661

[5] Cleve R, Gottesman D and Lo H K 1999 Phys. Rev.
Lett. 83 648

[6] Beige A, 2002 Acta Phys. Pol. A 101 357

[7] Bostr\"{om K and Felbinger T 2002 Phys. Rev. Lett.
89 187902

[8] W\'{ojcik A 2003 Phys. Rev. Lett. 90 157901

[9] Deng F G, Li C Y, Li Y S, Zhou H Y and Wang Y 2005
Phys. Rev. A 72 022338

[10] Yang C P, Chu S and Han S 2004 Phys. Rev. A
70 022329

[11] Jing W X, Fang J X, Zhu S Q and Sha J Q 2007 Chin.
Phys. Lett. 24 1144

[12] Yao C M 2006 Chin. Phys. Lett. 23 545