Giant all-optical modulation of second-harmonic generation mediated by dark excitons

Yadong Wang, Susobhan Das, Fadil Iyikanat, Yunyun Dai, Shisheng Li, Xiangdong Guo, Xiaoxia Yang, Jinluo Cheng, Xuerong Hu, Masood Ghotbi, Fangwei Ye, Harri Lipsanen, Shiwei Wu, Tawfique Hasan, Xuetao Gan, Kaihui Liu, Dong Sun, Qing Dai, F Javier Garcia de Abajo, Jianlin Zhao, Zhipei Sun