Add Yahoo as a preferred source to see more of our stories on Google. Trapped ions already power quantum computers and the world's most precise clocks. Now, by merging those strengths, researchers are ...

The most precise clocks ever built can now detect gravity’s warping of time across a distance shorter than a pencil tip. That achievement, remarkable on its own, has physicists asking a deeper ...

How does a clock become precise enough to guide a spacecraft across interstellar distance without drifting a single second over millions of years? Recent advances in quantum physics are pushing ...