Two of the forefathers of quantum theory, Albert Einstein and Niels Bohr, had a famous argument over whether light is a wave ...

Researchers have demonstrated that pairs of helium atoms can exist in two places at once while remaining linked in motion by ...

In optical interferometry, waves of a light signal travel to separate light collectors, and the interference pattern formed by superimposing the waves reveals spatial information about the light ...

Scientists show helium atoms can exist in two places at once, preserving quantum behavior even as they fall under gravity.

A light pulse is technically empty, yet capable of carrying a trillion photons in a single burst. That is part of what makes ...

(Aitor Diago/Moment/Getty Images) For the first time, physicists have observed that 'holes' in light can move faster than the ...

The electrons that power our society flow left and right through the circuitry in our electronics, back and forth along the ...

A dark point inside a wave of light sounds like a contradiction. It is also something researchers say they have now viewed in ...

Researchers at the Technion—Israel Institute of Technology have, for the first time, measured the temporal duration of ...

The ExoLife Finder (ELF) looks like no telescope ever built. A spectacular crown of 15 five-meter mirrors perches atop a ...

Physicists have developed a spectral-filtering technique that strips away unwanted extra photons from quantum light sources, ...

Citizen is celebrating the 50th anniversary of its first analog light-powered watch with the release of its Eco-Drive Photon watch in a limited edition, with two variants of 5,000 units each that pay ...