GoKawiilCQT team claims world's most accurate atomic clock using lutetium
Researchers at Singapore's Centre for Quantum Technologies, led by Murray Barrett, report building a lutetium-based atomic clock that outperforms previous record-holding clocks made with ytterbium, strontium and aluminum. The findings were published in Nature on September 23. The clock works by locking a laser to lutetium's atomic transition frequency, which then serves as an ultra-precise timekeeping reference.
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Barrett describes the device as the most accurate clock built so far, a claim that, if confirmed by independent verification, could strengthen the case for lutetium in future timekeeping standards. Such clocks are being pursued because they could sharpen tests of fundamental physics and detection of gravitational variations, and are among the contenders in ongoing efforts to redefine the second beyond the cesium standard used since the 1960s.
- A Singapore-based team built a lutetium atomic clock they say is the most accurate ever made.
- It reportedly surpasses earlier record-setting clocks based on ytterbium, strontium and aluminum.
- Ultra-precise clocks could aid fundamental physics research, gravity monitoring, and a future redefinition of the second.
Source: phys.org — Who'S Behind This Story, 2026-09-24
Published there as: “Scientists build most accurate atomic clock”
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