Chinese Researchers Quantum Teleport Photons Over 60 Miles

Since 1997, researchers have been able to quantum teleport photons with a major record being set by researchers at the  University of Science and Technology of China in Shanghai. In 2010, that team successfully teleported a photon over 16km.

Now that same team hasreleased new findings, in which they claim to have teleported photons nearly 100km, or over 60 miles.

Now, quantum teleportation isn’t quite the same thing as the teleportation inStar Trek. When researchers teleport a photon, they aren’t teleporting the actual photon, but rather the information contained in it through quantum entanglement. In essence, the second photon at the end of the teleportbecomes the first one – or at least, it becomes an identical qubit of information. So the information is exchanged without actually travelling through the intervening distance.

(If that sounds bizarre and frightening, you’re in good company. Albert Einstein understatedly called the process of quantum entanglement “spooky action at a distance.”)

The challenge for quantum teleportation is that it has to be done in free space. Fiberoptics don’t work, because once you get to distances over about 1 kilometer, the fiber absorbs so much light that the information is lost. But while a fiberoptic cable can keep photons focused, moving over free space means using lasers – which inevitably causes the beam of light to spread out over time. However, using a powerful laser along with some other optical equipment, the researchers here developed a technique to keep the beam focused over the course of 97km, and successfully achieved quantum teleportation.

The ability to teleport information means that it could be possible to have worldwide communications that are impossible to listen in on. Because in quantum teleportation, the information doesn’t travel over any intervening distances, there’s no way to tap into the communication. As Technology Review notes, “these guys clearly have their eye on the possibility of satellite-based quantum cryptography which would provide ultra secure communications around the world.”

That technology is still a long way off, however. Despite the fact that the communication developed here is very efficient, it’s also very slow. They’ll also have to keep improving the distance. 60 miles for teleportation is a new record. It’s impressive. But communications satellites are typically in geosynchronous orbit – 22,236 miles up in the air.

Still, while there’s still a long way to go before we have true quantum-teleportation powered communications, this is a huge step in that direction.

Source

Dey tuk r jebs!!

Tesla probably already done it

So... cloning?

I'm guessing the only part of the US government that gets enough funding to do really cool shit is the Military, that's where all the technological innovation comes from in the US now. Imagine just half of that funding went towards NASA instead.

lol @ sprgeonryan, anyway i wish technology would evolve faster. Even if there is no other life in our galaxy it would be nice to travel space.

Important: "When researchers teleport a photon, they aren’t teleporting the actual photon, but rather the information contained in it through quantum entanglement. In essence, the second photon becomes [identical in its properties to the first]"

The applications of this will probably never include teleporting actual objects, and certainly never include faster than light communication.

Edit: Never mind. I read the article wrong.

I think the article mentions it's been done before but now they're doing it over a much longer distance, or something like that

The only significant R&D house in America is the military and you'd be shocked by how wasteful they are with these funds. It's amazing how quickly the country stagnated after "the end of the cold war".