'Spooky' quantum entanglement discovered inside individual protons for 1st time ever
Physicists have long-suspected that the building blocks of protons experienced quantum entanglement. Now, researchers have the first direct evidence — after using a trick to infer subatomic particles' entropy. An artist's illustration of quantum entanglement. (Image credit: Jurik Peter via Shutterstock) Scientists have peered inside protons and discovered that quarks and gluons, their fundamental building blocks, experience quantum entanglement . Entangled particles are connected to each other, so that a change to one instantaneously causes a change to the other, even if they are separated by vast distances. Albert Einstein famously dismissed the idea as "spooky action at a distance," but later experiments proved that the bizarre, locality-breaking effect is real. Physicists have observed entanglement between quarks before but had never found evidence that they exist in a quantumly connected state inside protons. Now, a team of researchers ha...