Scientists Just Built the World’s Most Accurate Clock
The device posted a systematic uncertainty of 1.2 x 10-19 after researchers compared two identical clocks to verify its accuracy.
- On Wednesday, researchers at the National University of Singapore unveiled a new atomic clock using lutetium, a device four times more accurate than the previous best clock.
- Physicist Murray Barrett led the team during a decade-long project to harness lutetium, which remains remarkably stable despite fluctuations in temperature and magnetic fields.
- To verify precision, the team compared two independently built lutetium clocks, achieving matching results to the 19th digit with a systematic uncertainty of just 1.2 x 10-19.
- Metrologists may eventually use this technology to redefine the second, while scientists gain tools to map Earth's gravitational variations and test Einstein's theories of relativity.
- While the current setup requires two clocks sitting side-by-side, the team hopes this breakthrough fosters wider appreciation for lutetium's advantages in future fundamental physics experiments.
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The lutetium-powered atomic clock can detect the effects of height differences of just a few millimeters, so it could play an important role in redefining the second.
A research team led by scientists from the Quantum Technology Centre and the National University of Singapore has successfully developed two atomic-optic hours based on the ion of the Lutium element, and tested their full compatibility with unprecedented accuracy.
Scientists Just Built the World’s Most Accurate Clock
Lutetium clocks have achieved record accuracy and comparison precision, making them promising candidates for future time standards and measurements of gravity. An atomic clock built from the element lutetium at the Centre for Quantum Technologies (CQT) at the National University of Singapore (NUS) has set a new benchmark for timekeeping accuracy. Results published in Nature [...]
Scientists have created a clock that is incredibly accurate.
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