Multi-wavelength (or multi-frequency) coherent light sources are essential for diverse applications. Nevertheless, regulating the multiple emission wavelengths in an ultra-compact scale is challenging
Experimental data supporting figures shown in the main text and supplemental material of the preprint https://arxiv.org/abs/1612.03048 Journal reference: Phys. Rev. X 7, 031033 (2017)DOI: 10.1103/P
