KRISS Redetermines Strontium Frequency with 50 Times Greater Precision After 88 Years

The Korea Research Institute of Standards and Science (KRISS) has re-measured a key transition frequency of the strontium atom for the first time since 1938. Using a photonic grating chip, KRISS established a new absolute frequency value with measurement uncertainty reduced by over 50 times, providing a more accurate reference for next-generation quantum technologies.

Originally published by gnews