In quantum physics, objects can exist in multiple states at the same time—a phenomenon known as quantum superposition, where ...

A key question in physics is whether gravity follows quantum rules, but testing this is difficult because gravitational ...

Scientists have taken a major step toward probing one of physics’ biggest mysteries—how gravity and quantum mechanics fit ...

Some quantum cryptographers want to find ways to keep messages secret even if the rules of quantum mechanics don’t hold. The ...

Waterloo scientists have developed a new way to understand how the universe began, and it could change what we know about the Big Bang and the earliest moments of cosmic history. Their work suggests ...

Scientists have made the first experimental observation of matter wave diffraction in a short-lived electron-positron atom.

A Gravity Theory That Could Rewrite the Universe’s First Moments The first fraction of a second after the Big Bang has always posed a problem. Physics can describe a great deal about the universe ...

A cloud of helium atoms split, scattered and fell under gravity, yet still behaved as if its parts were linked. That is the ...

Scientists have taken lasers beyond light and into the realm of sound, creating a breakthrough “phonon laser” that ...

Once a baffling theory, quantum mechanics has evolved into a driving force behind modern technology and frontier research.

The quantum revolution in physics — whose 100th anniversary we have just celebrated — taught us that at the most basic level ...