[1] Brub D 1998 Phys. Rev. Lett. 81 3018

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

[3] Dusek M, L\"{utkenhaus N and Hendrych M 2006
Progress in Optics ed Wolf E (New York: Elsevier) vol 6 p 381

[4] Inamori H, L\"{utkenhaus N and Mayers D 2007 Eur.
Phys. J. D 41 599

[5] Huttner B, Gisin N, Mor T and Imoto N 1995 Phys.
Rev. A 51 1863

[6] Lutkenhaus N and Jahma M 2002 New J. Phys. 4
44

[7] Brassard G, Lutkenhaus N, Mor T and Sanders B C 2000
Phys. Rev. Lett. 85 1330

[8] Hwang W Y 2003 Phys. Rev. Lett. 91 057901

[9] Wang X B, Hiroshima T, Tomita A and Hayashi M 2007
Phys. Rep. 1 448

[10] Lo H K, Ma X F and Chen K 2005 Phys. Rev. Lett.
94 230504

[11] Scarani V, Acin A, Ribordy G and Gisin N 2004 Phys.
Rev. Lett. 92 057901

[12] Koashi M 2004 Phys. Rev. Lett. 93 120501

[13] Gottesman D, Lo H K, Lutkenhaus N and Preskill J 2004
Quantum Inform. Comput. 4 325

[14] Bennett C H and Brassard G 1984 Proceedings of the
IEEE International Conference on Computers, Systems and Signal
Processing (New York: IEEE) p 175

[15] Zhao Y, Qi B, Ma X F, Lo H K and Qian L 2006 Phys.
Rev. Lett. 96 070502

[16] Tobias S M, Weier H, Furst M, Ursin R, Tiefenbacher F,
Scheidl T, Perdigues J, Sodnik Z, Kurtsiefer C, Rarity J G,
Zeilinger A and Weinfurter H 2007 Phys. Rev. Lett. 98
010504

[17] Peng C Z, Zhang J, Yang D, Gao W B, Ma H X, Yin H, Zeng H
P, Yang T, Wang X B and Pan J W 2007 Phys. Rev. Lett. 98
010505

[18] Rosenberg D, Harrington J W, Rice P R, Hiskett P A,
Peterson C G, Hughes R J, Lita A E, Nam S W and Nordholt J E 2007
Phys. Rev. Lett. 98 010503

[19] Wang X B 2005 Phys. Rev. Lett. 94 230503

[20] Wang X B 2007 Phys. Rev. A 75 052301

[21] Wang X B, Peng C Z, Zhang J, Yang L and Pan J W 2008
Phys. Rev. A 77 042311

[22] Ma X F, Qi B, Zhao Y and Lo H K 2005 Phys. Rev. A
72 012326

[23] Gobby C, Yuan Z L and Shuelds A J 2004 Appl. Phys.
Lett. 84 3762