Quantum Physics

New research pokes holes in the idea that the cosmos expanded and then contracted before beginning again

Solving a notorious quantum quandary could require abandoning some of science’s most cherished assumptions about the physical world

Physicists have put the largest-ever object into a quantum superposition

Exotic particles called nonabelions could fix quantum computers’ error problem

The laws of physics allow time travel. So why haven’t people become chronological hoppers?

The strange phenomenon of quantum tunneling has been observed in a chemical reaction that defies classical physics

In 1949 physicist Chien-Shiung Wu devised an experiment that documented evidence of entanglement. Her findings have been hidden in plain sight for more than 70 years

Imaginary numbers—the square roots of negative numbers—are an inescapable part of quantum theory, a study shows

Quantum bursts of light could help examine minute chemical reactions and reveal the quantum properties of mysterious materials

New experiments can re-create the young cosmos, when it was a mash of fundamental particles, more precisely than ever before

The AdS/CFT duality conjecture suggests our universe is a hologram, enabling significant discoveries in the 25 years since it was first proposed

A lab-made black hole is beyond current technology but could be possible one day