Singapore Scientists Claim They Built The World’s Most Accurate Atomic Clock

Researchers at Singapore’s Centre for Quantum Technologies reported a lutetium-ion atomic clock that would be off by no more than about one second over 300 billion years, the best reported accuracy for an optical atomic clock. The team compared two single-ion lutetium clocks over 200 hours and found their ticks matched closely enough to differ by about one second over 55 billion years, the most precise clock comparison reported to date. The clocks’ low sensitivity to temperature and magnetic fields could support studies of gravity and fundamental physics, while contributing data…