EurekAlert August 5, 2020
Conventional approaches to terahertz waveguiding suffer from sensitivity to defects and sharp bends. Building on the topological phase of light, an international team of researchers (Singapore, Japan) experimentally demonstrated robust terahertz topological valley transport through several sharp bends on the all-silicon chip. The valley kink states are excellent information carriers owing to their robustness, single-mode propagation, and linear dispersion. They have demonstrated error-free communication through a highly twisted domain wall at an unprecedented data transfer rate (exceeding ten gigabits per second) that enables real-time transmission of uncompressed 4K high-definition video. The research opens a route towards terabit-per-second datalinks that could enable artificial intelligence and cloud-based technologies, including autonomous driving, healthcare, precision manufacturing and holographic communication…read more. TECHNICAL ARTICLE