Chinese scientists conduct quantum teleportation at a distance of 1,200 kilometers

The Chinese satellite Micius has successfully transmitted information at a distance of 1,200 kilometers using interlaced photons, breaking the 100-kilometer quantum teleportation record established nearly two years ago, according to a study published in the journal Science.

Quantum entanglement is such a strange phenomenon that even Einstein argued against its existence, calling it "a frightening action at a distance": pairs of particles can be inseparably linked, so that the state of one could come from the other, without Matter how far they are.

In essence, this process can be used to 'instantly' convey information between particles at theoretically infinite distances. Precisely for this reason, Einstein could not accept the idea: it violates the law of relativity, which stipulates that nothing can travel faster than the speed of light.

In previous experiments photons were enclosed in an optical fiber to protect them, passing the message from particle to particle. This method was used to set the previous record. However, the greater the distance, the greater the likelihood that the message will be lost or distorted.