31–40 of 219 posts
Correct me if this sounds noobish. So they have teleported state that has Information that can be decoded to bits and bytes(?) Forget about human teleportation for a sec, isn't this a big deal in a not so far future for telecommunication?
Correct me if this sounds noobish. So they have teleported state that has Information that can be decoded to bits and bytes(?) Forget about human teleportation for a sec, isn't this a big deal in a not so far future for telecommunication?
Just to give a concept of how difficult this is: > “The challenge was to keep the photons’ arrival time synchronized to within 10 pico-seconds,” > “Since these detectors only work at temperatures less than one degree above absolute zero the equipment also included a compact cryostat,” said Tittel. The dark fiber seems like it was important for synchronizing the clocks. And while they claim this could be used for encr…
As far as I know, I don't think that meshes with what actually happens. This has nothing to do with the message being secure; anyone with all the pieces could read the message.
The important part is, since observation effects quantum state, the receiver can determine whether a third party observed the key. If the key matches, then there's a guarantee that it was not observed, and therefore is safe to use.
Teleportation is not possible. Quantum teleportation is the transmission of the exact state of a photon from one place to another. Still, even this happens at less than the speed of light. Otherwise it would violate causality. The media plays fast and loose with terminology either out of plain ignorance or the desire to sell a story.
>this happens at less than the speed of light. Why can't it happen simultaneously? Why is distance relevant in this case?
But, there are quotes in this article to the contrary. e.g.:
“Such a network will enable secure communication without having to worry about eavesdropping, and allow distant quantum computers to connect,” says Tittel.
Was my understanding mistaken?
Correct me if this sounds noobish. So they have teleported state that has Information that can be decoded to bits and bytes(?) Forget about human teleportation for a sec, isn't this a big deal in a not so far future for telecommunication?
I had thought that quantum entanglement could not be used for communication because the state that is transmitted is random, and cannot be controlled at either end. But, there are quotes in this article to the contrary. e.g.: “Such a network will enable secure communication without having to worry about eavesdropping, and allow distant quantum computers to connect,” says Tittel. Was my understanding mistaken?
Earlier quoted context omitted.
>this happens at less than the speed of light. Why can't it happen simultaneously? Why is distance relevant in this case?
As I always bring up in these threads, quantum teleportation requires the transmission of classical bits, which of course is done slower than the speed of light.
See my top-level post for more information [1].
Awesome. So a quantum network would have the photon act as a data stream, in a way it would act like a physical security key. So with a lot of work, this would be amazing for 1:1 communications. But what if I want to send my dick pick to hundreds of people at once(1:100 distribution)? Is it possible to entangle one photon with multiple?