[1] Vacher M, Bearpark MJ, Robb MA, Malhado JP. Electron dynamics upon ionization of polyatomic molecules: Coupling to quantum nuclear motion and decoherence. Phys Rev Lett. 2017;118(8): Article 083001.

[2] Pabst S, Greenman L, Ho PJ, Mazziotti DA, Santra R. Decoherence in attosecond photoionization. Phys Rev Lett. 2011;106(5): Article 053003.

[3] Zhang Q, Xie H, Li G, Wang X, Lei H, Zhao J, Chen Z, Yao J, Chen Y, Zhao Z. Sub-cycle coherent control of ionic dynamics via transient ionization injection. Commun Phy. 2020;3:50.

[4] Gorlach A, Neufeld O, Rivera N, Cohen O, Kaminer I. The quantum-optical nature of high harmonic generation. Nat Commun. 2020;11:4598.

[5] Gombköto Á, Varró S, Mati P, Földi P. High-order harmonic generation as induced by a quantized field: Phase-space picture. Phys Rev A. 2020;101(1): Article 013418.

[6] Lewenstein M, Ciappina MF, Pisanty E, Rivera-Dean J, Stammer P, Lamprou T, Tzallas P. Generation of optical Schrödinger cat states in intense laser–matter interactions. Nat Photon. 2021;17:1104–1108.

[7] Yuan L, Liu Y, Yao J, Cheng Y, Cheng Y. Recent advances in air lasing: A perspective from quantum coherence. Adv Quantum Technol. 2019;2:1900080.

[8] Ando T, Lötstedt E, Iwasaki A, Li H, Fu Y, Wang S, Xu H, Yamanouchi K. Rotational, vibrational, and electronic modulations in N2+ lasing at 391nm: evidence of coherent B2Σu+-X2Σg+-A2∏u coupling. Phys Rev Lett. 2019;123(20):203201.

[9] Zhang X, Lu Q, Zhang Z, Fan Z, Zhou D, Liang Q, Yuan L, Zhuang S, Dorfman K, Liu Y. Coherent control of the multiple wavelength lasing of N2+: coherence transfer and beyond. Optica. 2021;8:668.

[10] Yao J, Wang L, Chen J, Wan Y, Zhang Z, Zhang F, Qiao L, Yu S, Fu B, Zhao Z, et al. Photon retention in coherently excited nitrogen ions. Sci Bulletin. 2021;66:1511.

[11] Richter M, Lytova M, Morales F, Haessler S, Smirnova O, Spanner M, Ivanov M. Rotational quantum beat lasing without inversion. Optica. 2020;7:586.

[12] Xu H, Lotstedt E, Iwasaki A, Yamanouchi K. Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling. Nat Commun. 2015;6:8347.

[13] Yao J, Jiang S, Chu W, Zeng B, Wu C, Lu R, Li Z, Xie H, Li G, Yu C, et al. Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields. Phys Rev Lett. 2016;116(14): Article 143007.

[14] Yao J, Zeng B, Xu H, Li G, Chu W, Ni J, Zhang H, Chin SL, Cheng Y, Xu Z. High-brightness switchable multiwavelength remote laser in air. Phys Rev A. 2011;84(5):051802.

[15] Mysyrowicz A, Danylo R, Houard A, Tikhonchuk V, Zhang X, Fan Z, Liang Q, Zhuang S, Yuan L, Liu Y. Lasing without population inversion in N2+. APL Photonics. 2019;4:110807.

[16] Liu Y, Ding P, Lambert G, Houard A, Tikhonchuk V, Mysyrowicz A. Recollision-induced superradiance of ionized nitrogen molecules. Phys Rev Lett. 2015;115(13): Article 133203.

[17] Lei H, Yao J, Zhao J, Xie H, Zhang F, Zhang H, Zhang N, Li G, Zhang Q, Wang X, et al. Ultraviolet supercontinuum generation driven by ionic coherence in a strong laser field. Nat Commun. 2022;13:4080.

[18] Kleine C, Winghart M, Zhang Z, Richter M, Ekimova M, Eckert S, Vrakking M, Nibbering E, Rouzee A. Electronic state population dynamics upon ultrafast strong field ionizaiton and fragmentation of molecular nitrogen. Phys Rev Lett. 2022;129: Article 123002.

[19] Li G, Jing C, Zeng B, Xie H, Yao J, Chu W, Ni J, Zhang H, Xu H, Cheng Y, et al. Signature of superradiance from a nitrogen-gas plasma channel produced by strong-field ionization. Phys Rev A. 2014;89(3): Article 033833.

[20] Miao Z, Zhong X, Zhang L, Zheng W, Gao Y, Liu Y, Jiang H, Gong Q, Wu C. Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields. Phys Rev A. 2018;98(3): Article 033402.

[21] Lewenstein M, Balcou P, Ivanov MY, L’Huillier A, Corkum PB. Theory of high-harmonic generation by low-frequency laser fields. Phys Rev A. 1994;49(3):2117.

[22] Goulielmakis E, Loh ZH, Wirth A, Santra R, Rohringer N, Yakovlev VS, Zherebtsov S, Pfeifer T, Azzeer AM, Kling MF, et al. Real-time observation of valence electron motion. Nature. 2010;466(7307):739–743.

[23] Zhang Y, Lötstedt E, Yamanouchi K. Population inversion in a strongly driven two-level system at far-off resonance. J Phys B Atomic Mol Phys. 2017;50(18): Article 185603.

[24] Langhoff SR, Bauschlicher CW. Theoretical study of the first and second negative systems of N2+. J Chem Phys. 1988;88(1):329–336.

[25] Ott C, Kaldun A, Raith P, Meyer K, Laux M, Evers J, Keitel CH, Pfeifer T. Lorentz meets Fano in spectral line shapes: A universal phase and its laser control. Science. 2013;340(6133):716–720.

[26] Limonov MF, Rybin MV, Poddubny AN, Kivshar YS. Fano resonances in photonics. Nat Photon. 2017;11(9):543–554.

[27] Brewer RG, Shoemaker RL. Optical free induction decay. Phys Rev A. 1972;6(6):2001.

[28] Chesnokov EN, Kubarev VV, Koshlyakov PV, Kulipanov GN. Direct observation of the terahertz optical free induction decay of molecular rotation absorption lines in the sub-nanosecond time scale. Appl Phys Lett. 2012;101(13): Article 131109.

[29] Bengtsson S, Larsen EW, Kroon D, Camp S, Miranda M, Arnold CL, Huillier AL, Schafer KJ, Gaarde MB, Rippe L, et al. Space-time control of free induction decay in the extreme ultraviolet. Nat Photon. 2017;11(4):252–258.

[30] Hahn EL. Nuclear induction due to free Larmor precession. Phys Rev. 1950;77(2):297.

[31] Chu W, Zeng Z, Yao J, Xu H, Ni J, Li G, Zhang H, He F, Jing C, Cheng Y, et al. Multiwavelength amplified harmonic emissions from carbon dioxide pumped by mid-infrared femtosecond laser pulses. Euro Phys Lett. 2012;97(6):64004.