Quantum Entanglement Used to Measure Earth's Rotation

Physicists achieve unprecedented precision with entangled photons in a groundbreaking experiment.

Researchers at the University of Vienna built a highly sensitive quantum-optical Sagnac interferometer.
The experiment successfully measured Earth's rotation using entangled photons, achieving a thousand-fold improvement in precision.
The interferometer utilized a 2-kilometer-long optical fiber wound into a large coil for the measurements.
This method overcomes previous limitations in sensitivity due to the delicate nature of quantum entanglement.
The findings could pave the way for future experiments exploring the intersection of quantum mechanics and general relativity.