[3] [3] Avakyan R M, Hayrapetyan A G, Khachatryan B V, et al. Coherent presentation of density operator of the harmonic oscillator in thermostat ［J］. Phys. Lett. A, 2007, 372: 77-80.

[4] [4] Xu Y J, Fan H Y, Liu Q Y. New equation for deriving pure state density operators by Weyl correspondence and Wigner operator ［J］. Chin. Phys. B, 2010, 9: 020303.

[5] [5] Fan H Y, Cuo Q. Generalized Fredholm operator equation and its solution based on intermediate coordinate-momentum representation ［J］. Phys. Scr., 2007, 76: 533.

[6] [6] Fan H Y, Cuo Q. Quantum phase space theory based on intermediate coordinate-momentum representation ［J］. Mod. Phys. Lett. B, 2007, 27: 1831-1836.

[7] [7] Fan H Y, Lu H L, Fan Y. Newton-Leibniz integration for ket-bra operators in quantum mechanics and derivation of entangled state representations ［J］. Ann. Phys., 2006, 321: 480.

[8] [8] Fan H Y, et al. Special two-mode unitary transform and maximum entanglement state for four wave mixing ［J］. Phys. Scr., 2005, 71: 277.

[9] [9] Jiang N Q, et al. General Einstein-Podolsky-Rosen-type entanglement of continuous variables for bosons ［J］. Phys. Rev. A, 2006, 74: 012306.

[10] [10] Jiang N Q, Jing B Q, Zheng Y Z, et al. Common eigenstates of many-particle compatible observables ［J］. EPL, 2008, 84: 14002.

[11] [11] Jiang N Q, Wang Y J, Zheng Y Z, et al. Tractable quantification of entanglement for multipartite pure states ［J］. Chin. Phys. Lett., 2008, 25: 1943-1948.

[12] [12] Jiang N Q, Wang Y J. Criterion for genuine multipartite entanglement quantum channel ［J］. Chin. Phys. Lett., 2010, 27: 010302.

[13] [13] Fan H Y, Jiang N Q. Relation between characteristic function of density operator and tomogram ［J］. Chin. Phys. Lett., 2009, 26: 110302.

[14] [14] Fan H Y, et al. New approach for calculating tomograms of quantum states by virtue of the IWOP technique ［J］. Commun. Theor. Phys., 2007, 47: 431-436.