“Teleporting quantum information is now a practical reality,” asserts Deutsche Telekom. The firm’s T‑Labs used commercially available Qunnect hardware to demo quantum teleportation over 30km of live, commercial Berlin fiber, running alongside classical internet traffic. In an email to Tom’s Hardware, Deutsche Telekom’s PR folks said that Cisco also ran the same hardware and demo process to connect data centers in NYC.
I would like to know what the advantages are. I mean whats the point?
Theoretically, zero latency. If you don’t have to wait for a photon to get all the way from one end of a line to another, that can improve a lot of things.
I’m not sure what the fiber is doing here, but if they can get it working without that, they could drive rovers around Mars in real time, instead of waiting the 4-24 minute delay each way when sending/receiving signals.
Or streaming video games could be actually playable instead of frustrating messes.
Have we ever actually proved it can exceed the speed of light in information travel? I swear I have seen stuff where its theorized the speed of light is also the speed of causality
Nope, the actual information must still be transported via a classical no quantum (and trusted) channel so that both ends can match their statistics and thus deduce the crytographic keys from the qunatum signals. And thats it what its all about: key exchange
thanks. I had forgotten about that I think mainly because I can’t wrap my mind around how it works like if its intercepted and used then it will confirm that its void and produce a new one or such.
Yes. If you could transport information faster than the speed of light, it’s easy to find examples that break causality, where an observer sees a message arrive before he sees it being sent.
I’d argue that that would be breaking our ability to properly interpret causality, not that causality itself breaks. Things still occur in the order they happen regardless of what order we see them happen from different perspectives.
No, not if the observer can see the message arrive first, and immediately send a faster than light signal to the sender that turns off their transmitter, preventing the sending of their message.
If they see the message arrive, it has already been sent (and received). Not seeing it get sent yet doesn’t mean it hasn’t happened yet. You’re not accounting for the frame of reference translation involved. Some of the information in your example has travel time. None of that information starts traveling before the things that created that information occurred, though. Even if it might look like that from some perspectives. It won’t look like that to others.
I’m sorry, but all of special relativity disagrees with you.
God damn it, they’re going to use this to force cloud gaming on us.
The lack of affordable consumer: harddrives, ssds, RAM, and gpus will do that long before they get this working.
But latency is the determining factor in cloud gaming, not the hardware. The speed of light is the bottleneck.
I’m aware. It’s a trash experience currently. But that won’t stop them from pushing it anyway, now that personal machines are being priced out of the market.
The fiber is there because the data is being sent through the fiber as photons like usual. There is no zero latency happening at all and it will not allow rovers to be controlled remotely in real time. That would break causality. This has more to do with encryption and the inability to wiretap without detection.
So…not entanglement at all, then.
Well, it is still using entanglement. It’s just not using it to transmit the data. More like a checksum.
Not just latency, but any connection at all. Somewhere there’s no signal, like in a submarine.
They do everything, just to avoid direct peering with Cloudflare
automated quantum stock trading in 5…4…3…2…1…
As far as I understand this, it’s not zero latency, it’s safer key exchange possible for some encryption based on a physical and not mathematical principle.
Would be cool, of course, if they really could achieve zero latency. That could do wonders to various infrastructure efficiency. Say, allow for electric grids and internet backbone lines to know of spreading load changes to optimize for them.
There’s going to be latency because the NIC on both ends still communicates with copper to the rest of the computer system(s.)
Still going to be faster than a fiber connection or copper. Not to mention the latency induced by say the IEX Magic Box.
Anyway, nothing about quantum entanglement suggests zero latency, it’s just a fancy name, in fact it’s two things with synchronized states.
90% accuracy is the difference between arriving safely at your destination and arriving as a headless corpse.
This is about “teleporting” information not physical material (if my understanding is correct)
What do you think teleporters do? They don’t physically move your body - they dismantle it and reconstruct a copy at the destination. The middle step is the moving of information. Transportation like in Star Trek is basically magic - The Fly is more accurate., and the fact that it failed to differentiate between the two organisms is a demonstration of a horrendous flaw in the technology. Although realistically he would have come out the other side as a gooey heap, because his DNA would have also been scrambled with the DNA of every microbe on his skin, his entire gut biome, and even the his eyelash worms - look it up.
Seriously, a person is a disgusting ecosystem just filled with all kinds of crazy shit. And that’s not even accounting for the cells in you with random-ass mutations from DNA transcription errors.
The only way for it to actually work world be to analyze the location and connections of every atom in the scanning area and then send that information to a machine that rebuild the scanning area exactly the same. And if you don’t destroy the original, you didn’t transport anything - you copy it.
