Could China’s photonic chips help it leapfrog US on AI?

China opened a top-level optical computing laboratory in Shanghai in June after a string of breakthroughs in the field that could help get around US curbs on its development of artificial intelligence (AI). A decade after optical computing and next-generation photonics were made national priorities, China last year began limited production of locally designed photonic chips. These transmit and process data using photons – particles of light generated by lasers – whereas silicon chips such as the...