[1] [1] C. H. Bennett, G. Brassard, C. Crepeau et al.. Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels[J]. Phys. Rev. Lett., 1993, 70(13):1895～1899

[2] [2] C. A. Fuchs, N. Gisin, R. B. Griffiths et al.. Optimal eavesdropping in quantum cryptography. I. information bound and optimal strategy[J]. Phys. Rev. A., 1997, 56(2):1163～1172

[3] [3] Yu Yafei, Zhang Zhiming. Analysis on unsecurity of quantum secret sharing based on smolin bound entangled states[J]. Acta Optica Sinica, 2008, 28(3):556～559

[4] [4] C. H. Bennett, S. J. Wiesner. Communication via one-and two-particle operators on Einstein-Podolsky-Rosen states[J]. Phys. Rev. Lett., 1992, 69(20):2881～2884

[5] [5] Y. Guo, L. M. Kuang. Generation of three-mode W-type entangled coherent states in free-travelling optical fields[J]. Chin. Opt. Lett., 2008, 6(4):303～306

[6] [6] D. P. DiVincenzo. Quantum Computation[J]. Science, 1995, 270(5234):255～261

[7] [7] A. Peres. Separability criterion for density matrices[J]. Phys. Rev. Lett., 1996, 77(8):1413～1415

[8] [8] M. Horodecki, P. Horodecki. Reduction criterion of separability and limits for a class of distillation protocols[J]. Phys. Rev. A, 1999, 59(6):4206～4216

[9] [9] K. Chen, L. A. Wu. A matrix realignment method for recognizing entanglement[J]. Quantum Information and Computation, 2003, 3(3):193～202

[10] [10] M. Horodecki, P. Horodecki, R. Horodecki. Separability of mixed states: necessary and sufficient conditions[J]. Phys. Lett. A, 1996, 223(25):1～8

[11] [11] G. Giedke, B. Kraus, M. Lewenstein et al.. Entanglement criteria for all bipartite Gaussian states[J]. Phys. Rev. Lett., 2001, 87(16):167904(1-4)

[12] [12] R. Simon. Peres-Horodecki separability criterion for continuous variable systems[J]. Phys. Rev. Lett., 2000, 84(12):2726～2729

[13] [13] L. M. Duan, G. Giedke, J. I. Cirac et al.. Inseparability criterion for continuous variable systems[J]. Phys. Rev. Lett., 2000, 84(12):2722～2725

[14] [14] M. Hillery, M. S. Zubairy. Entanglement conditions for two-mode states[J]. Phys. Rev. Lett., 2006, 96:050503(1-4)

[15] [15] Y. J. Xia, G. C. Guo. Squeezing and entanglement in continuous variable systems[J]. Chin. Phys. Lett., 2004, 21(10):1877～1880

[16] [16] Zhou Ming, Fang Jiayuan, Kong Fanzhi et al.. Influence of Entangled-Atoms pair on squeezing of field entropy[J]. Acta Optica Sinica, 2007, 27(2):340～343

[17] [17] M. Hillery, M. S. Zubairy. Entanglement conditions for two-mode states: Applications[J]. Phys. Rev. A, 2006, 74:032333(1-7)