Terahertz topological photonic integrated circuits for 6G and beyond: A Perspective

The development of terahertz integrated circuits is vital for realizing sixth-generation (6G) wireless communication, high-speed on-chip interconnects, high-resolution imaging, biosensors, and fingerprint chemical detection. Nonetheless, the existing devices suffer from reflection, scattering losses at sharp bends or defects. Recently discovered topological phases light endow photonics with extraordinary properties, such as reflectionless propagation robustness against impurities defects, which devices. Leveraging edge states combined a low-loss silicon platform poised to offer remarkable performance providing breakthrough in field interconnects. In this Perspective, we present brief outlook various functional enabled by photonic insulator that will pave path augmentation complementary metal oxide semiconductor compatible technologies, essential accelerating vision 6G communication beyond enable ubiquitous connectivity massive digital cloning physical biological worlds.