Light has always been the stage on which quantum mechanics performs its strangest tricks, and the double-slit experiment is ...

Physicists in China have brought one of Einstein’s thought experiments into reality—but not quite with the outcome he hoped for.

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

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

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