# Chinese scientists develop nuclear optical clock

https://mins.news/en/item/92492

- CGTN, 2026-10-08 14:00 UTC
- Science
- Original: https://news.cgtn.com/news/2026-10-08/Chinese-scientists-develop-nuclear-optical-clock-1R52wnVU14k/p.html?UTM_Source=cgtn&UTM_Medium=rss&UTM_Campaign=World

> A Tsinghua University team led by Ding Shiqian used a continuous-wave ultraviolet laser and a thorium-229 crystal to measure a transition inside an atomic nucleus and operate a nuclear optical clock. Its second-level stability was nearly an order of magnitude better than the European team’s, the researchers said. The findings were published online in Nature.

## Related coverage

- [Chinese scientists develop a working nuclear optical clock](https://mins.news/en/item/90776) — China News Service, 2026-10-08
- [Scientists in Vienna and Beijing create the first operating nuclear clocks](https://mins.news/en/item/90113) — Reuters, 2026-10-07