Chinese scientists reported that they “teleported” a photon over hundreds of miles

http://gizmodo.com/scientists-teleport-a-particle-hundreds-of-miles-but-w-1796818859?IR=T

Humanity is advancing rapidly towards a place where the news sounds an awful lot like science fiction. In fact, yesterday, Chinese scientists reported that they “teleported” a photon over hundreds of miles using a “quantum satellite.” But this isn’t Star Trek. It’s the real world.

Which happens to mean it’s a lot less exciting than Star Trek-style teleportation, unfortunately. But it’s still really cool, I promise!

This “quantum teleportation” doesn’t actually involve teleporting a real object—it’s not really teleportation at all. The scientists are actually sending information about a particle of light in a way that can only be accessed by two observers. This could have major implications for the future of computing—it would make for incredible data encryption. But encryption with this technology is still pretty far off.

Still, the researchers write in their new paper, “This work establishes the first ground-to-satellite up-link for faithful and ultra-long-distance quantum teleportation, an essential step toward global-scale quantum internet.” Let’s walk through what that means.

Last summer, China launched a satellite, called Micius, designed to test communications based on the principles of quantum mechanics over large distances. They released their first results last month, demonstrating that they could “entangle” particles over record distances—hundreds of kilometers.

Entanglement is a consequence of the fact that in quantum physics, the scientific theory governing the smallest particles, humans can’t determine photons’ exact properties until they look at them. Before we make an observation of a particle, we only probabilities describing what the particle might look like. I’m just going to steal an analogy I used yesterday, where photons are balls, and their colors (red or green) are analogous to their properties.

As an example, let’s say there are two bags, and each has one of two balls, red or green. You give a bag to your friend. Quantum mechanics only gives the probabilities that your bag contains either ball color, and that’s all you know before making the observation. At human scales, each bag already contains a red or green ball.

But, because our balls are photons, they become entangled:

Quantum mechanics says both balls are red and green at the same time—until you look. That’s weird on its own, but it gets worse. If you look at your ball, the other ball automatically takes on the other color.

What the Chinese satellite did was use lasers and crystals to bestow light particles with one of two available properties, in this case, polarization states, entangle them, and separate them between 500 and 1400 kilometers, or 310 to 870 miles. Essentially, they prepared the two bags with the red/green balls.

Once the researchers have these particles entangled over a distance, they can take advantage of their link to send secrets between the bag holders, which is what their new paper, posted on the arXiv physics preprint server, claims to have done.

———-

“This “quantum teleportation” doesn’t actually involve teleporting a real object—it’s not really teleportation at all.”

so why do you call it that then?

“What the Chinese satellite did was use lasers and crystals to bestow light particles with one of two available properties, in this case, polarization states, entangle them, and separate them between 500 and 1400 kilometers, or 310 to 870 miles.”

401

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~ by seeker401 on July 14, 2017.

2 Responses to “Chinese scientists reported that they “teleported” a photon over hundreds of miles”

  1. Nazi Germany flew JET fighters in 1943. America, using Nazi scientists flew jet fighters at mach 4 in 1955!!!! In 2017 few if any fighters fly so fast. HIDDEN TECHNOLOGY!!!! America is so far advanced in hidden tech, they are ALREADY teleporting people. What we are told is coming is already old tech. We are slaves. Whites are being replaced by ‘better’ slaves all over the world. There is a huge separation of elites and slaves underway. Vaccines and GMO foods are designed to kill you. You are the slaves…

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