Chinese Scientists Just Set the Record for the Farthest Quantum Teleportation
Chinese scientists have just broken the teleportation record. No, they have transmitted person to a spacecraft. Instead, they sent a bundle of Tibetan information to an orbiting satellite, up to 870 miles (1,400 kilometers) above the surface of the Earth.
Specifically, scientists in orbit the quantum state of a photon (information bias).
Not only did the team set a record for quantum distance communications, it also demonstrated that a practical system can be built for quantum communication over long distances.
Such a communication system would be impossible to hear without alerting the user, making the communications much safer online.
Experiments of this type have been done before, but Howard Wiseman, director of the Center for Quantum Dynamics at Griffith University in Brisbane, Australia, told Live Science that an email stretched its capabilities to technology. [Star Trek fans of Futuristic Technologies would like to see]
“It’s much harder because it’s a fast-moving target, and it has its quantum detectors in space that have to work without anyone getting dressed with them,” he said. “This is a big step towards quantum communication on a global scale.”
The experience takes advantage of one of the many phenomena that describe quantum mechanics: entanglement, or “action at a distance fear”, as Albert Einstein was called.
When two particles are entangled, they are connected so that an action performed on one affects the other, well, regardless of the distance between them. Similarly, when you measure the state of a particle in the interlocking pair, you automatically know the state of the second.
Physicists call “correlated” states because if a particle – a photon, for example – is in a “high” state, its entangled partner will be “low” – a sort of specular image. (Strictly speaking, there are four possible combinations of the two particles are located).
The strange thing is that once the state of the first particle is measured, the second knows “what is its condition.” The information seems to move instantly with no speed limit of light. [8 ways to see Einstein’s theory of relativity in real life]
In June, the same researchers reported on another feat in the quantum teleportation: Micius interlinked photons sent two terrestrial stations at distances between 994 000 and 1 439 miles (1,600 and 2,400 km), according to satellite tracking in their orbit.
While this experiment showed that entanglement can occur over long distances, the new experiment uses this entanglement to transmit the quantum state of a photon at a remote location.