The realization of integrated, low-cost and efficient solutions for high-speed, on-chip communication requires terahertz-frequency waveguides and has great potential for information and communication technologies, including sixth-generation (6G) wireless communication, terahertz integrated circuits, and interconnects for intrachip and interchip communication. However, conventional approaches to terahertz waveguiding suffer from sensitivity to defects and sharp bends. Here, building on the topological phase of light, we experimentally demonstrate 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. By leveraging such states, we demonstrate 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 (that is, with a horizontal display resolution of approximately 4,000 pixels). Terahertz communication with topological devices 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.

高速，片上通信的集成，低成本，高效解决方案的实现需要太赫兹频率波导，并且在信息和通信技术方面具有巨大潜力，包括第六代（6G）无线通信，太赫兹集成电路和芯片内和芯片间通信的互连。然而，太赫兹波导管的常规方法具有对缺陷和急剧弯曲的敏感性。在此，我们以光的拓扑相位为基础，通过全硅芯片上的几个尖锐弯折实验证明了强大的太赫兹拓扑谷传输。谷结态由于其鲁棒性，单模传播和线性色散而成为极好的信息载体。通过利用这些状态，我们展示了通过高度扭曲的域墙以无与伦比的数据传输速率（每秒超过10吉比特）实现的无差错通信，该通信能够实时传输未压缩的4K高清视频（即，水平显示分辨率约为4,000）像素）。太赫兹与拓扑设备的通信打开了通往每秒千兆位数据链路的途径，这些链路可以支持人工智能和基于云的技术，包括自动驾驶，医疗保健，精密制造和全息通信。