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

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?

Researchers from the University of Vienna and the University of Duisburg-Essen showed that metallic ...

Quantum teleportation has moved from science fiction fantasy to laboratory reality. In a milestone experiment, researchers pulled off something that sounds impossible. They successfully sent ...