[1] Wootters W K, Zurek W H. A single quantum cannot be cloned[J]. Nature (London), 1982, 299: 802.

[2] Gisin N, Ribordy G, Tittel W, et al. Quantum cryptography[J]. Rev. Mod. Phys., 2002, 74(1): 145-197.

[7] Buek V, Hillery M. Quantum copying: Beyond the no-cloning theorem[J]. Phys. Rev. A, 1996, 54 (3): 1844-1852.

[8] Scarani V, Iblisdir S, Gisin N, et al. Quantum cloning[J]. Rev. Mod. Phys., 2005, 77 (4): 1225-1256.

[9] Werner R F. Optimal cloning of pure states[J]. Phys. Rev. A, 1998, 58 (3): 1827-1832.

[10] Bruβ D, Cinchetti M, D’Ariano G M, et al. Phase-covariant quantum cloning[J]. Phys. Rev. A, 2000, 62 (1): 012302.

[11] Fan H, Matsumoto K, Wang X B, et al. Quantum cloning machines for quatorial qubits[J]. Phys. Rev. A, 2001, 65 (1): 012304.

[12] D’Ariano G M, Macchiavello C. Optimal phase-covariant cloning for qubits and qutrits[J]. Phys. Rev. A, 2003, 67(4): 042306.

[13] Buscemi F, D’Ariano G M, Macchiavello C. Economical phase-covariant cloning of qudits[J]. Phys. Rev. A, 2005, 71 (4): 042327.

[15] Zhang W H, Wu T, Ye L, et al. Optimal real state cloning in d dimensions[J]. Phys. Rev. A, 2007, 75(4): 044303.

[16] Jimenez O, Bergou J, Delgado A. Probabilistic cloning of three symmetric states[J]. Phys. Rev. A, 2010, 82(6): 062307.

[17] Wang Y N, Shi H D, Xiong Z X, et al. Unified universal quantum cloning machine and fidelities\[J]. Phys. Rev. A, 2011, 84 (3): 034302.

[18] Zhang W H, Yu L B, Cao Z L, et al. Optimal cloning of two known nonorthogonal quantum states[J]. Phys. Rev. A, 2012, 8(2): 022322.