For more than a century, the double-slit experiment has been the sharpest test of what reality is made of, and of whether ...

Quantum mechanics is weird. When you think you have reached the bottom of its weirdness, you always discover a new ...

A single atom as a movable slit: Researchers realize Einstein's thought experiment in original form, observing ...

Researchers have finally resolved a century-old debate over the famous "double slit" experiment, according to new research.

"Dark photon" theory says light's interference patterns may emerge from quantum particles, not waves, upending centuries of ...