The concept of entanglement links far-flung particles. That relationship can prove that someone is in the location they claim ...

In quantum physics, a vacuum is not completely empty. It is constantly traversed by minuscule fluctuations, like very faint ...

A new experiment with momentum-entangled helium atoms could help unite quantum mechanics and general relativity.

Scientists show helium atoms can exist in two places at once, preserving quantum behavior even as they fall under gravity.

When lasers were invented in the 1960s, they opened new avenues for scientific discovery and everyday applications, from ...

A pair of identical particles swapping places sounds like a small move. In quantum physics, it is a defining one. In everyday three-dimensional space, that swap only comes in two flavors. Either the ...

The results are just what theory predicts, but when the theory clashes as strongly with everyday experience as this, ...

Quantum computers of the future may be closer to reality thanks to new research from Caltech and Oratomic, a Caltech-linked start-up company. Theorists and experimentalists teamed up to develop a new ...

But such measurements are notoriously challenging: the instruments used are themselves governed by quantum laws, and their interaction with particles can alter the very properties they are meant to ...

Physicists have long struggled to unite quantum mechanics—the theory governing tiny particles—with Einstein’s theory of gravity, which explains the behavior of stars, planets, and the structure of the ...

Overview: Quantum Physics for Beginners by Carl J. Pratt simplifies core ideas like wave-particle duality and entanglement, making it ideal for first-time reade ...