David vs Goliaths: Singapore builds most accurate clock ever, leaves US and China in dust

Singapore's research team has developed the world's most accurate atomic clock, surpassing both US and Chinese counterparts. Utilizing a single lutetium ion, the clock would lose only one second every 260 billion years, nearly 20 times the age of the universe. This unprecedented precision could enhance timekeeping and aid in redefining the second, potentially impacting fundamental physics studies, from Einstein's theory to dark matter research.

Murray Barrett, the team leader, highlighted lutetium's exceptional resistance to temperature and magnetic field fluctuations, allowing stability across extreme environments, from Death Valley to Antarctica. While he emphasized the simplicity of atomic clock development, he acknowledged the challenge in securing backing for such ambitious projects.

Singapore's Centre for Quantum Technologies and funding agencies played crucial roles in nurturing the research. Atomic clocks, employing microwaves or lasers to measure atomic transitions, have revolutionized various technologies, including GPS and telecommunications. The Singapore team's innovative approach, focusing on lutetium's unique properties, sets them apart in the global race to enhance atomic clock technology.

To validate their achievement, the researchers constructed two independent clocks and achieved unprecedented precision in their comparison. Their next objective is to miniaturize the clock for practical use outside the lab.