[1] Moehring D L, Maunz P, Olmschenk S, Younge K C,
Matsukevich D N, Duan L M and Monroe C 2007 Nature 449
68

[2] Rosenfeld W, Berner S, Volz J, Weber M and Weinfurter H
2007 Phys. Rev. Lett. 98 050504

[3] Cho J and Lee H W 2005 Phys. Rev. Lett. 95
160501

[4] Razavi M and Shapiro J H 2006 Phys. Rev. A 73
042303

[5] Serafini A, Mancini S and Bose S 2006 Phys. Rev.
Lett. 96 010503

[6] Zheng S B and Guo G C 2006 Phys. Rev. A 73
032329

[7] Duan L M, Madsen M J, Moehring D L, Maunz P, Kohn R N and
Monroe C 2006 Phys. Rev. A 73 062324

[8] Yin Z Q and Li F L 2007 Phys. Rev. A 75 012324

[9] Lu D M and Zheng S B 2007 Chin. Phys. Lett. 24
596

[10] Ou Y C, Yuan C H and Zhang Z M 2006 J. Phys. B: At.
Mol. Opt. Phys. 39 7

[11] Mancini S and Bose S 2004 Phys. Rev. A 70
022307

[12] Walls D F and Milburn G J 1994 Quantum Optics
(Berlin: Springer) chap 7 p 121

[13] Guo Y Q, Chen J and Song H S 2006 Chin. Phys. Lett.
23 1088

[14] \v{Stemlmachovi\v{c P and Bu\v{zek V 2004 Phys.
Rev. A 70 032313

[15] Lee J S and Khitrin A K 2005 Phys. Rev. A 71
062338

[16] Coffman V, Kundu J and Wootters W K 2000 Phys. Rev.
A 61 052306

[17] Wootters W K 1998 Phys. Rev. Lett. 80 2245

[18] Tittel W, Brendel J, Gisin B, Herzog T, Zbinden H and
Gisin N 1998 Phys. Rev. A 57 3229