Scientists test Einstein’s quantum challenge with one atom, directly measuring when photon paths erase interference stripes.

A century-old thought experiment on wave–particle duality is brought into the laboratory using a single trapped atom ...

Several weeks ago I picked up “The Elegant Universe” because I thought it would have information on The Ultimate Theory. Soon afterwards, I picked up “How to Teach Physics To Your Dog” in order to get ...

An experiment measuring a single atom's recoil confirmed that observing a particle destroys interference, settling the ...

One of the best-known examples of the counterintuitive behavior seen in the quantum world is the double-slit experiment. Take a piece of material that blocks light and cut two small slits in it; hit ...