Quantum internet signals beamed between drones a kilometre apart

Entangled photons have been sent between two drones hovering a kilometre apart, demonstrating technology that could form the building blocks of a quantum internet.

When a pair of photons are quantum entangled, you can instantly deduce the state of one by measuring the other, regardless of the distance separating them. This phenomenon, which Albert Einstein dismissively called “spooky action at a distance”, is the basis of quantum encryption – using entangled particles to ensure communications are secret.

Read more: https://www.newscientist.com/article/2264957-quantum-internet-signals-beamed-between-drones-a-kilometre-apart/#ixzz6jhWUfzzM