[1] Nielsen M A and Chuang I L 2000 Quantum Computation and
Quantum Information (Cambridge: Cambridge University Press)

[2] Mor T and Horodecki P Preprint quant-ph/9906039

[3] Bennett C H et al 1993 Phys. Rev. Lett. 70 1895

[4] Bouwneester D et al 1997 Nature 390 575

[5] Boschi D et al 1998 Phys. Rev. Lett. 80 1121

[6] Bandyopadhyay S 2000 Phys. Rev. A 62 012308

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

[8] Deng F G, Li X H, Li C Y, Zhou P and Zhou H Y 2005
Phys. Rev. A 72 044301

[9] Zeng B, Liu X S, Li Y S and Long G L 2002 Commun.
Theor. Phys. 38 537

[10] Liu J M and Guo G C 2002 Chin. Phys. Lett. 19
456

[11] Dai H Y, Li C Z and Chen P X 2003 Chin. Phys. Lett.
20 1196

[12] Yan F L and Wang D 2003 Phys. Lett. A 316 297

[13] Yan F L and Yang L G 2003 Il Nuovo Cimento
118B 79

[14] Yan F L and Bai Y K 2003 Commun. Theor. Phys.
40 273

[15] Gao T, Wang Z X and Yan F L 2003 Chin. Phys. Lett.
20 2094

[16] Gao T, Yan F L and Wang Z X 2005 Chin. Phys.
14 893

[17] Gao T 2004 Commun. Theor. Phys. 42 223

[18] Yan F L and Ding H W 2006 Chin. Phys. Lett.
23 17

[19] Cirac J I and Zoller P 1995 Phys. Rev. Lett.
74 4083

[20] Gisin N, Ribordy G, Tittel W and Zbinden H 2002 Rev.
Mod. Phys. 74 145

[21] Shimizu K and Imoto N 1999 Phys. Rev. A 60
157

[22] Beige A et al 2002 Acta Phys. Pol. A 101 357

[23] Deng F G and Long G L 2004 Phys. Rev. A 69
052319

[24] Deng F G, Long G L and Liu X S 2003 Phys. Rev. A
68 042317

[25] Yan F L and Zhang X Q 2004 Euro. Phys. J. B
41 75

[26] Gao T 2004 Z. Naturforsch. 59a 597

[27] Gao T, Yan F L and Wang Z X 2005 J. Phys. A
38 5761

[28] Gao T, Yan F L and Wang Z X 2005 Int. J. Mod. Phys.
C 16 1293

[29] Gao T, Yan F L and Wang Z X 2005 Chin. Phys. Lett.
22 2473

[30] Man Z X, Zhang Z J and Li Y 2005 Chin. Phys. Lett.
22 18

[31] Zhang Z J and Man Z X 2005 Phys. Rev. A 72
022303

[32] Zhang Z J, Yang J, Man Z X and Li Y 2005 Eur. Phys.
J. D 33 133

[33] Zhang Z J, Li Y and Man Z X 2005 Phys. Rev. A
71 044301

[34] Cai Q Y and Li B W 2004 Chin. Phys. Lett. 21
601

[35] Cai Q Y 2004 Chin. Phys. Lett. 21 1189

[36] Chen C Y and Gao K L 2005 Chin. Phys. Lett.
22 801

[37] Kuang L M, Zeng A H and Kuang Z H 2004 Chin. Phys.
Lett. 21 999

[38] Barenco A et al 1995 Phys. Rev. A 52 3457