Add Yahoo as a preferred source to see more of our stories on Google. Most of the energy cost in quantum timekeeping comes not from the clock but from the act of observing its tiny ticks. (CREDIT: ...

Add Yahoo as a preferred source to see more of our stories on Google. Oxford study finds reading quantum clocks costs far more energy than running them, reshaping quantum tech design and understanding ...

A study led by the University of Oxford has identified a surprising source of entropy in quantum timekeeping—the act of measurement itself. In a study published in Physical Review Letters, scientists ...

Rydberg atoms are atoms with one or more outer electrons excited to very high energy levels, which interact very strongly ...

Scientists are exploring a new type of optical atomic clock based on ytterbium-173 ions that could help define the future standard for measuring time.

Researchers at Chongqing University and Chongqing Normal University report a theoretical prediction of a new quantum phase of ...

At this year’s LASER World of Photonics (2025), in Munich, Germany, Toptica Photonics introduced to the market what the Munich-based company describes as “the first commercially available optical ...

Breakthrough trial with Tiqker clock aboard XCal submarine advances resilient navigation in GPS-denied environments Testbed submarine XV Excalibur went to sea with Infleqtion’s quantum optical atomic ...

Healthcare organizations rely on cryptography-based security, but the infrastructure faces radical change with the rise of quantum computing. A panel of experts at HIMSS26 will explore what's needed ...

Keeping track of time seems simple. A watch ticks, a pendulum swings, and a calendar flips. But at the quantum level, marking time is far more complicated — and far more expensive than anyone expected ...

Graphic illustrating the difference in energy between running a quantum clock (left: a single electron hopping between two nanoscale regions) and reading the ticks of the clock (right). The energy ...