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

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 ...

Now, two unrelated-but-similar experiments confirm that, in a double-slit experiment, detection of a photon’s path (its ...

Controlling light is an important technological challenge—not just at the large scale of optics in microscopes and telescopes ...