Scientists claim to have found evidence of “negative time” after observing photons exiting a material before entering it. A team of quantum physicists from the University of Toronto in Canada made the ...

Scientists have long been fascinated by how light interacts with matter. At the heart of this curiosity are photons—particles that carry light—as they pass through different materials. When photons ...

In a quantum experiment, scientists observed photons spending ‘negative time’ in a cloud of rubidium atoms. This is likely caused by the fact that photons move faster when exciting these atoms than ...

Quantum physicists are familiar with wonky, seemingly nonsensical phenomena: atoms and molecules sometimes act as particles, sometimes as waves; particles can be connected to one another by a “spooky ...