Scientists build world's most accurate atomic clock
Take a second and turn it into trillions of moments. Measure each one. That's how precisely an atomic clock at Singapore's Centre for Quantum Technologies (CQT) keeps time—and with record-setting accuracy, according to results published in Nature on Sept. 23.
Scientists have developed the world's most accurate atomic clock, according to research published in Nature. Built at Singapore's Centre for Quantum Technologies, the clock utilizes the element lutetium and outperforms previous record holders made from different elements. The researchers claim their clock is the most precise ever made, with an uncertainty of 1 x 10^-19, the lowest reported for any optical atomic clock.
Lutetium's clock transition is unaffected by temperature or magnetic field changes, contributing to its superior accuracy. The team compared their clock with two independently built clocks, finding that they agreed within 5.7 x 10^-19, the most precise clock comparison ever made. With its low sensitivity to environmental factors, the lutetium clock remains stable in a wide range of environments, from hot deserts to cold Antarctic plateaus. The researchers aim to miniaturize the clock for transportable use in the future.
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