Quantum mechanics and classical physics don't always get along, and can sometimes form apparent paradoxes where observed quantum behavior violates well-established physical laws. In quantum mechanics, ...

Add Yahoo as a preferred source to see more of our stories on Google. Physicists have demonstrated the simplest form of the GHZ paradox using pulsed light in 37 dimensions. (CREDIT: Shutterstock) ...

It seems quantum mechanics and thermodynamics cannot be true simultaneously. In a new publication, UT researchers use photons in an optical chip to demonstrate how both theories can be true at the ...

A research team has achieved the loophole-free test of Hardy's paradox for the first time. The team successfully demonstrated Hardy's nonlocality while closing both the detection efficiency loophole ...

For over a century, quantum mechanics has challenged our established notions of physics. At its core are questions that unsettle our understanding of the universe: when does a quantum particle ...

That quantum mechanics is a successful theory is not in dispute. It makes astonishingly accurate predictions about the nature of the world at microscopic scales. What has been in dispute for nearly a ...

Scientists can’t prove time travel is possible, but they are testing its core principles using quantum and mathematical experiments. These involve entanglement, closed timelike curves, and ...

A puzzle with only three moves may sound simple. In quantum physics, it can still break classical logic. That is the heart of a new experiment led by physicist Zhenghao Liu and colleagues at the ...

The properties of quantum mechanics have long puzzled physicists—even Albert Einstein once described quantum entanglement as “spooky action at a distance.” That’s because quantum mechanics, at least ...

Quantum mechanics has always had a way of making even the sharpest minds stop and scratch their heads. In the everyday world, you expect objects to follow straightforward rules. A ball thrown into the ...