Physicists measured Earth’s rotation using quantum entanglement
The experiment is a step toward testing how quantum physics interfaces with gravity
In a laboratory experiment, scientists sent entangled photons (red squiggles) into an interferometer (illustrated) that was sensitive enough to measure Earth’s rotation.
Marco Di Vita
Earth’s rotation has been measured many times over — but never like this. In a first, scientists used entangled quantum particles called photons to reveal the rate at which the globe spins.
The feat is a step toward probing one of the biggest mysteries of physics: how the tiny world of quantum physics interfaces with gravity.
