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Friday, August 21, 2020

Scientists Build Ultra-High-Speed Terahertz Wireless Chip

More chips to support high speed AI applications.

Nanyang Technological University (Singapore)
August 5, 2020

Scientists at Nanyang Technological University, Singapore (NTU Singapore) and Japan's Osaka University have constructed an ultra-high-speed terahertz (THz) wireless chip using photonic topological insulators (PTIs). This enabled an 11 gigabits-per-second (Gbps) data rate, which can support real-time streaming of 4K high-definition video. The PTIs avoid the material defects and transmission error rates of conventional waveguides by directing light waves along the surface and edges of the insulators. Light waves are "topologically protected" via a small silicon chip with rows of triangular holes, with smaller triangles oriented opposite to larger triangles. NTU's Ranjan Singh said, "THz technology ... can potentially boost intra-chip and inter-chip communication to support artificial intelligence and cloud-based technologies, such as interconnected self-driving cars, which will need to transmit data quickly to other nearby cars and infrastructure to navigate better and also to avoid accidents."

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