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https://www.nist.gov/programs-projects/trapped-sr-ion-clock-secondary-realization-si-second
Trapped Sr+ ion clock; a secondary realization of the SI second | NIST
The single 88Sr+ clock is attractive for both its frequency accuracy and for its relative simplicity. The 674 nm clock transition has been independently...
ion clocksi secondtrappedsrsecondary
https://physicsworld.com/a/ion-clock-transition-could-benefit-quantum-computing-and-nuclear-physics/
Ion-clock transition could benefit quantum computing and nuclear physics – Physics World
Jan 29, 2026 - Deformed nucleus makes multi-ion design easier
ion clocktransition couldquantum computingnuclear physicsbenefit
https://interestingengineering.com/science/us-theory-time-quantum-superposition
US scientists show time can go quantum in ion clock experiments
Scientists previously theorized time can go quantum, using atomic clocks will demonstrate how it can tick fast and slow at the same time.
us scientistsshow timeion clockgoquantum