Vienna Beijing teams operate first thorium-229 nuclear clocks in Nature
Analysis: Science & Technology — 09 October 2026 Vienna and Beijing teams operate first thorium-229 nuclear clocks Two independent groups reported in Nature the first working nuclear clocks, locking ultraviolet lasers to a transition inside thorium-229 nuclei embedded in calcium fluoride crystals. The Tsinghua-led Beijing device and the TU Wien–PTB Vienna device reached the milestone … Read more