In a modern version of the famed double-slit experiment, physicists demonstrated that light cannot behave as both wave and particle simultaneously, overturning a key premise Einstein held. The ...

The double-slit experiment is the best demonstration of quantum weirdness, in which electrons simultaneously act like particles and waves and seemingly violate basic laws of physics. Now we’re trying ...

“Einstein and Bohr would have never thought that this is possible, to perform such an experiment with single atoms and single photons,” said Wolfgang Ketterle, head of the MIT group whose new ...

Back in the 1920s, quantum mechanics, which is the theory that underpins everything from how atoms behave to how quantum computers work, was well on the way to gaining mainstream acceptance. But one ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: VICTOR de SCHWANBERG/SCIENCE PHOTO LIBRARY via Getty Images Quantum physics is the branch ...

"No phenomenon is a real phenomenon until it is an observed phenomenon." — John Archibald Wheeler We used to think the observer was a passive witness to the universe. What if the observer is actually ...