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Singapore team builds record-setting atomic clock that would lose one second in 260 billion years

IntEngineering reports that the single-ion lutetium clock is approximately four times more accurate than the previous calcium-ion record holder.

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2 Sources, 1d ago, first seen 1d ago

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IntEngineering reports that researchers at the National University of Singapore’s Centre for Quantum Technologies built the clock using a single lutetium ion. It would lose one second every 260 billion years. The team compared two independent clocks over 200 hours and reported agreement within 5.7 parts in 10¹⁹. The research was published in Nature.

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2 Sources, first seen 1d ago

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2 Sources, first seen 1d ago

43 likes2 comments9 saves6 reposts

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2 Sources

@IntEngineeringA small team at the National University of Singapore's Centre for Quantum Technologies has built the world's most accurate atomic clock using a single ion of lutetium, a rare earth metal. The clock is so precise it would lose one second every 260 billion years, nearly 20 times the age of the universe, and is approximately four times more accurate than the previous record holder, a calcium-ion clock developed by China's Academy of Sciences. It also surpasses a US NIST aluminium-ion clock unveiled last year. Lutetium's unusual properties give it key advantages: it is highly resistant to temperature and magnetic field changes, remaining stable across the full range of temperatures found on Earth, and can remain in an excited state for about a week compared to just minutes for strontium, giving researchers more time to measure its frequency. To verify accuracy, the team built two independent lutetium clocks and compared them over 200 hours, achieving agreement to within 5.7 parts in 10¹⁹, the most precise comparison between two atomic clocks ever reported. The research is published in Nature.1d
@malaymailSingapore scientists build world’s most accurate atomic clock, surpassing US and China with record-setting precision. https://ebx.sh/WbPs4s18h
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    2 Sources

    @IntEngineeringA small team at the National University of Singapore's Centre for Quantum Technologies has built the world's most accurate atomic clock using a single ion of lutetium, a rare earth metal. The clock is so precise it would lose one second every 260 billion years, nearly 20 times the age of the universe, and is approximately four times more accurate than the previous record holder, a calcium-ion clock developed by China's Academy of Sciences. It also surpasses a US NIST aluminium-ion clock unveiled last year. Lutetium's unusual properties give it key advantages: it is highly resistant to temperature and magnetic field changes, remaining stable across the full range of temperatures found on Earth, and can remain in an excited state for about a week compared to just minutes for strontium, giving researchers more time to measure its frequency. To verify accuracy, the team built two independent lutetium clocks and compared them over 200 hours, achieving agreement to within 5.7 parts in 10¹⁹, the most precise comparison between two atomic clocks ever reported. The research is published in Nature.1d
    @malaymailSingapore scientists build world’s most accurate atomic clock, surpassing US and China with record-setting precision. https://ebx.sh/WbPs4s18h
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