[2] Harris S E, Field J E, et al. Nonlinear optical processes using electromagnetically induced transparency [J]. Phys. Rev. Lett., 1990, 64(10): 1107-1110.

[3] Hakuta K, Marmet L, Stoicheff B P. Electric-field-induced 2nd-harmonic generation with reduced absorption in atomic-hydrogen [J]. Phys. Rev. Lett., 1991, 6(5): 596-599.

[4] Thompson R I, Stoicheff B P, Zhang G Z, et al. Nonlinear generation of 103 nm radiation with electromagnetically-induced transparency in atomic-hydrogen [J]. Quan. Opt., 1994, (4): 349-358.

[5] Petch J C, Keitel C H, Knight P L, et al. Role of electro-magnetically induced transparency in resonant four-wave-mixing schemes [J]. Phys. Rev. A, 1996, 53(1): 543-561.

[6] Dorman C, Marangos J P. Resonant sum-difference frequency mixing enhanced by electromagnetically induced transparency in krypton [J]. Phys. Rev. A, 1998, 58(2): 4121-4132.

[7] Dorman C, Kucukkara I, Marangos J P. Measurement of high conversion efficiency to 123.6nm radiation in a four-wave-mixing scheme enhanced by electromagnetically induced transparency [J]. Phys. Rev. A, 1999, 61(1): 013802-1-5.

[8] Scully M O, Zubairy M S. Quantum Optics [M]. England: Cambridge University Press, 1997.

[9] Wu Ying, Yang Xiaoxue. Electromagnetically induced transparency in V-, -, and cascade-type schemes beyond steady-state analysis [J]. Phys. Rev. A, 2005, 71(6): 053806-1-7.

[10] Schmidt H, Imamoglu A. Giant Kerr nonlinearities obtained by electromagnetically induced transparency [J]. Opt. Lett., 1996, 21(23): 1936-1939.

[11] Harris S E, Hau L V. Nonlinear optics at low light levels [J]. Phys. Rev. Lett., 1999, 82(23): 4611-4614.

[12] Yan Min, Rickey E G, Zhu Yifu. Nonlinear absorption by quantum interference in cold atoms [J]. Opt. Lett., 2001, 2(8): 548-550.

[13] Yan Min, Rickey E G, Zhu Yifu. Observation of absorptive photon switching by quantum interference [J]. Phys. Rev. A, 2001, 64(4): 041801-1-4.

[14] Hou B P, Wang S J, Yu W L, et al. Effect of vacuum-induced coherence on single- and two-photon absorption in a four-level Y-type atomic system [J]. Phys. Rev. A, 2004, 69(5): 053805-1-5.

[15] Merrian A J, Sharpe S J, Shverdin M, et al. Efficient nonlinear frequency conversion in an all-resonant double- system [J]. Phys. Rev. Lett., 2000, 84(23): 5308-5311.

[18] Turchette Q A, Hood C J, Lange W, et al. Measurement of conditional phase shifts for quantum logic [J]. Phys. Rev. Lett., 1995, 75 (25): 4710-4713.

[19] Rebic S, Tan M S, Parkins A S, et al. Large Kerr nonlinearity with a single atom [J]. J. Opt. B: Quantum. Semiclass. Opt., 1999, 1(4): 490-495.

[20] Wang Hai, Goodskey D, Xiao Min. Controlling light by light with three-level atoms inside an optical cavity [J]. Opt. Lett., 2002, 27(15): 1354-1356.

[21] Imamoglu A, Schmidt H, Woods G, et al. Strongly interacting photons in a nonlinear cavity [J]. Phys. Rev. Lett., 1997, 79(8): 1467-1470.

[22] Ottaciani C, Vitali D, Artoni M, et al. Polarization qubit phase gate in driven atomic media [J]. Phys. Rev. Lett., 2003, 90(19): 197902-1-4.

[23] Goren C, Wilson-Gordon A D, Rosenbluh M, et al. Sub-Doppler and subnatural narrowing of an absorption line induced by interacting dark resonances in a tripod system [J]. Phys. Rev. A, 2004, 69(6): 063802-1-5.

[24] Popov A K, Myslivets S A, George T F. Nonlinear interference effects and all-optical switching in optically dense in homogeneously broadened media [J]. Phys. Rev. A, 2005, 71(4): 043811-13.

[25] Wang Hai, Goorskey D, Xiao Min. Enhanced Kerr nonlinearity via atomic coherence in a three-level atomic system [J]. Phys. Rev. Lett., 2001, 87(7): 073601-1-4.

[26] Wang Hai, Goorskey D, Xiao Min. Dependence of enhanced Kerr nonlinearity on coupling power in a three-level atomic system [J]. Opt. Lett., 2002, 27(4): 258-260.

[27] Xiao Min. Novel linear and nonlinear optical properties of electromagnetically induced transparency systems [J]. IEEE J. Quantum Electron., 2003, 9(7): 86-92.

[28] Kang H, Zhu Yifu. Observation of large Kerr nonlinearity at low light intensities [J]. Phys. Rev. Lett., 2003, 91(9): 093601-1-4.

[29] Niu Yueping, Gong Shangqing, et al. Giant Kerr nonlinearity induced by interacting dark resonances [J]. Opt. Lett., 2005, 30(24): 3371-3373.

[30] Niu Yueping, Gong Shangqing. Enhancing Kerr nonlinearity via spontaneously generated coherence [J]. Phys. Rev. A, 2006, 73(5): 053811-1-6.

[31] Wang Zengbin, Marzlin K, Sanders B C. Large cross-phase modulation between slow copropagating weak pulses in Rb [J]. Phys. Rev. Lett., 2006, 97(6): 063901-1-4.

[32] Li Shujing, Yang Xudong, Cao Xuemin, et al. Enhanced cross-phase modulation based on a double electromagnetically induced transparency in a four-level tripod atomic system [J]. Phys. Rev. Lett., 2008, 101(7): 073602-1-4.

[33] Sinclair G F. Time-dependent cross-phase-modulation in Rb [J]. Phys. Rev. A, 2009, 79(2): 023815-1-7.

[34] Hou B P, Wei L F, Long G L, et al. Large cross-phase-modulation between two slow pulses by coupled double dark resonances [J]. Phys. Rev. A, 2009, 79(3): 033813-1-7.

[35] He Bing, Nadeem M, Bergou J A. Scheme for generating coherent-state superpositions with realistic cross-Kerr nonlinearity [J]. Phys. Rev. A, 2009, 79(3): 035802-1-4.

[36] Mogilevtsev D, Tomá Tyc, Korolkova N. Influence of modal loss on quantum state generation via cross-Kerr nonlinearity [J]. Phys. Rev. A, 2009, 79(5): 053832-1-12.

[37] Rebi S, Twamley J, Milburn G J. Giant Kerr nonlinearities in circuit quantum electrodynamics [J]. Phys. Rev. Lett., 2009, 103(15): 150503-1-4.

[38] Ham B S, Shahriar M S, Hemmer P R. Enhanced nondegenerate four-wave mixing owing to electromagnetically induced transparency in a spectral hole-burning crystal [J]. Opt. Lett., 1997, 22(15): 1138-1140.

[39] Lukin M D, Hemmer P R, Lffler M, et al. Resonant enhancement of parametric processes via radiative interference and induced coherence [J]. Phys. Rev. Lett., 1998, 81(13): 2675-2678.

[40] Deng L, Payne M G, Garrett W R. Four-wave mixing with short pulses and optimized atomic coherence [J]. Phys. Rev. A, 2001, 63(4): 043811-1-8.

[41] Deng L, Kozuma M, Hagley E W, et al. Opening optical four-wave mixing channels with giant enhancement using ultraslow pump waves [J]. Phys. Rev. Lett., 2002, 88(14): 143902-1-3.

[42] Wu Ying, Saldana J, Zhu Yigu. Large enhancement of four-wave mixing by suppression of photon absorption from electromagnetically induced transparency [J]. Phys. Rev. A, 2003, 67(1): 013811-1-5.

[43] Wu Ying, Wang Xiaoxue. Highly efficient four-wave mixing in a double-lambda system in an ultra-slow propagation regime [J]. Phys. Rev. A, 2004, 70(5): 053818-1-5.

[44] Wu Ying. Two-color ultraslow optical solitons via four-wave mixing in cold atom [J]. Phys. Rev. A, 2005, 71(6): 053820-1-5.

[45] Kang H, Hernande G, Zhu Yifu. Slow light six-wave mixing at low light intensities [J]. Phys. Rev. Lett., 2004, 93(7): 073601-1-4.

[46] Paspalakis E, Knight P L. Transparency, slow light and enhanced nonlinear optics in a four-level scheme [J]. J. Opt. B: Quantum. Semiclass. Opt., 2002, 4: S372-S375.

[47] Niu Yueping, Li Ruxin, Gong Shangqing. High efficiency four-wave mixing induced by double-dark resonances in a five-level tripod system [J]. Phys. Rev. A, 2005, 71(4): 043819-1-5.

[48] Hashmi F A, Bouche M A. Coherent control of the effective susceptibility through wave mixing in a duplicated two-level system [J]. Phys. Rev. Lett., 2008, 101(21): 213601-1-4.

[49] Du Yigang, Zhang Yanpeng, Zuo Cuicui, et al. Controlling four-wave mixing and six-wave mixing in a multi-Zeeman-sublevel atomic system with electromagnetically induced transparency [J]. Phys. Rev. A, 2009, 79(6): 063839-1-9.

[50] Zhang Yanpeng, Nie Zhiqiang, Zheng Huaibin, et al. Electromagnetically induced spatial nonlinear dispersion of four-wave mixing [J]. Phys. Rev. A, 2009, 80(1): 013835-1-4.

[51] Zhang Yanpeng, Brown A W, Xiao Min. Opening four-wave mixing and six-wave mixing channels via dual electromagnetically induced transparency windows [J]. Phys. Rev. Lett., 2007, 99(12): 123603-1-4.

[52] Zhang Yanpeng, Khadka U, Anderson B, et al. Temporal and spatial interference between four-wave mixing and six-wave mixing channels [J]. Phys. Rev. Lett., 2009, 102(1): 013601-1-4.