https://arxiv.org/pdf/1905.10316
X Guo, Y Ding, Y Duan, X Ni - arXiv preprint arXiv:1905.10316, 2019
Creating materials with time-variant properties is critical for breaking reciprocity that imposes fundamental limitations to wave propagation. However, it is challenging to realize efficient and ultrafast temporal modulation in a photonic system. Here …