Overview
- A team led by Igor Pikovski detailed in Physical Review Letters on Monday how optical atomic clocks could probe whether time shows quantum behavior.
- The theory predicts quantum superposition in time, meaning a single clock could register both faster and slower ticking at once separated by tens of attoseconds.
- The authors describe experiments using trapped‑ion optical clocks controlled by lasers and suggest using quantum squeezing to boost tiny timing shifts.
- They argue several signatures should be within reach of today’s best ion and optical clocks, and collaborating groups at Colorado State University and NIST expect to attempt tests next.
- Atomic clocks already resolve relativity’s time dilation from small height changes, and observing quantum features of time would offer rare data to link quantum theory with gravity.