Can a photon be caught behaving like a wave and a particle in the same run of an experiment? For almost a century, that ...

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

In the late 1970s, legendary physicist John Wheeler proposed a radical question: Exactly when does the universe notice that we're paying attention to a quantum experiment? And does it really matter?

It's time for the latest update in confirming things we already knew—and, as always, it's being far more interesting than you might expect. Simply put, scientists have conducted a super-advanced ...

Not everyone is happy with the probabilistic nature of quantum mechanics. The fact that particles are only statistically likely to be somewhere you expect them to be is a tough cookie to swallow. To ...

A persistent group of scientists at the University of Warsaw have accomplished the impossible by creating a hologram of a solitary particle of light, reports Business Insider.