Time feels steady and familiar in daily life, but at the quantum level it becomes slippery. That puzzle now has a fresh twist ...

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

Physicists have found a way to measure how long ultra-fast quantum events actually take—without using a clock at all.

Entangled photons are at the heart of a variety of different and powerful quantum applications. By exploiting this unique quantum phenomenon, in which information correlates between two or more ...

Controlling light at the level of individual photons could one day do for quantum networks what switching and routing have done for classical internet infrastructure. To help realize that vision, ...

Schematic of a single photon with zero angular momentum (green) splitting into two photons (red) with either zero or opposite angular momenta (sketched through the spatially varying color), which adds ...

Research reveals how close human vision comes to sensing the smallest possible unit of light. Here’s why that matters for ...

Explore how quantum sensors are revolutionizing scientific measurement. Learn about superposition, entanglement, and high-precision data acquisition.

Kyoto, Japan -- The concept of quantum entanglement is emblematic of the gap between classical and quantum physics. Referring to a situation in which it is impossible to describe the physics of each ...