NewsMarkets

Science

Lu+ Optical Clocks Achieve 19th Digit Accuracy

Two independent single-ion optical clocks using lutetium ions demonstrate fractional frequency uncertainties near 10^-19, advancing precision timekeeping standards.

1 publisher · 1 article · first seen 23 Sept 2026 · updated 2d ago

This story has stopped developing; this page is its permanent record. More from that day

Sources

Every article we clustered into this story. Headlines link to the publisher.

  1. Lu + optical frequency references with accuracy verified at the 19th digit Nature ·