Haowen Bi, Fei Wang, Jiahui Shi, Jingxin Bao, Ruilin Gou, Changlong Li, Meiling Zhang. "Broadband C  +  L-band waveguide amplifier enabled by co-doping with dual-size PbS/CdS quantum dots." Applied Physics Letters, 2026. doi:10.1063/5.0347072