Scientists Propose Ion-Clock Test of Time Superposition, With 1 Clock Running Faster and Slower
Updated
Updated · open.kg · May 20
Scientists Propose Ion-Clock Test of Time Superposition, With 1 Clock Running Faster and Slower
2 articles · Updated · open.kg · May 20
Physical Review Letters published a proposal from Stevens Institute, Colorado State and NIST researchers to test whether time itself can exist in quantum superposition rather than flow at one fixed rate.
Ion atomic clocks using single aluminum or Ytterbium ions would be cooled near absolute zero and probed with lasers, where the team says quantum fluctuations should still alter the clocks' ticking.
Squeezed quantum-vacuum states are the key mechanism: the calculations suggest the same clock could register both faster and slower time simultaneously and become entangled with its own motion.
Igor Pikovski said the required technology already exists, putting a first experimental test within reach and turning a long-theoretical idea into a near-term laboratory target.
If scientists can entangle a clock with time, what new technologies will this quantum control unlock?
Could one clock soon prove that time can flow at two different speeds simultaneously?
Will proving time is quantum finally unite the two pillars of modern physics?
A Clock in Two Times: Experimental Breakthrough in Quantum Superposition of Proper Time
Overview
In April 2026, physicist Igor Pikovski and his team made a major breakthrough by showing that a single atomic clock could exist in a quantum superposition, ticking at two different rates at once. This idea, first theorized about a decade ago, became possible thanks to recent technological advances. Their research focuses on ion clocks, where the clock’s internal state can become entangled with its own quantum motion, allowing multiple time rates to be observed at the same time. This work pushes the boundaries of our understanding of time at the quantum level and is now being actively tested in experiments.