China launches photonic computing lab to bypass US chip bans

China has officially opened its first dedicated photonic computing laboratory in Shanghai, marking a strategic bet by Beijing on light-based chips as a workaround for tightening US semiconductor export controls. The Shanghai Key Laboratory of Integrated Photonic Computing Chips and Systems launched on June 11 at Shanghai Jiao Tong University, as reported by the state-backed Jiefang Daily.

The facility is a collaboration between the university and Shanghai-based startup Lightelligence, a major player in the country’s photonic computing sector. Lightelligence went public on the Hong Kong stock exchange in April, with its shares surging roughly 380% on the first day of trading. The company claims to be the first globally to achieve large-scale deployment of hybrid optical-electronic computing, though this assertion has not been independently confirmed.

Why photons matter for AI

Conventional AI chips rely on electrons moving through silicon circuits. Photonic chips use photons, or particles of light, which travel faster and produce far less heat. The potential advantages are substantial: higher bandwidth, lower latency, and a fraction of the energy consumption. These qualities are increasingly critical as training frontier AI models pushes data center power demands to their limits.

Zou Weiwen, the lab’s director and a photonics professor at Shanghai Jiao Tong University, described optical computing as “an important pathway for achieving breakthroughs in computing power.” The lab will focus on photonic chip architectures, silicon-photonics integration, optical components, and the algorithms necessary to make the technology commercially viable.

A hedge against export controls

The lab’s opening aligns with Beijing’s broader push for technological self-reliance. Since 2022, Washington has restricted China’s access to advanced semiconductors, repeatedly widening the rules and forcing Chinese firms to seek alternatives. This search has already shifted China’s AI chip strategy away from general-purpose GPUs toward custom silicon. Photonics represents a more radical pivot, one that could let Chinese engineers bypass lithography bottlenecks entirely by leveraging the country’s existing strengths in fiber optics and laser technology.

Chinese authorities have designated photonics and photonic-electronic hybrid accelerator chips as strategic national priorities. Shanghai officials said they had coordinated funding across multiple science and technology programs to back the effort.

Big ambitions, early days

Beijing is already investing heavily in AI infrastructure through other channels. A reported $295 billion blueprint would build a nationwide network of data centers running largely on domestic chips by 2028. However, photonic computing remains far from production-ready. Zou acknowledged that the field faces “fundamental scientific challenges,” citing the lack of a mature software and algorithm ecosystem capable of efficiently harnessing photonic hardware.

The gap between laboratory promise and commercial reality is wide. But with conventional chips increasingly hard to source and AI workloads growing exponentially, China is clearly willing to bet on the physics of light.