Anyone wanna talk with me
- Thread starter Master_ofyou
- Start date
- Oct 13, 2018
- 27
- 32
- Sep 8, 2021
- 143
- 367
sure, how do you imagine a inter-galactic method of communication based on quantum entanglement ? I though of voice as it's just a vibration but I was wondering if we could have some sort of instantaneous galactic equivalent to internet ... or does it have to be one to one transmitter / receiver kind of thing, much like a walkies talkie
note that it would be interesting to find "archaic" future technology like a the equivalent of a rotary dial phone...
note that it would be interesting to find "archaic" future technology like a the equivalent of a rotary dial phone...
Quantum entanglement, by its very nature, would not work as a faster-than-light communication method.
Firstly, the entangled pair have to begin at a proximate location. So the best you could do is send the pair to opposite ends of the universe, observe the state of one particle and that would set the state of the other. This would be just as fast as simply sending the signal in one direction at the speed of light.
The more important bit, though, is that doing anything to influence the state of the particle breaks the entanglement.
A common analogy is to put a left shoe and a right shoe in two different boxes and ship them to two different locations. Once you open one box, you instantaneously know what's in the other. But if you then decide to take out whatever's in one box and toss a right shoe into it, you have no guarantee that the other box has a left shoe because you just tampered with one of the boxes.
"Spooky action at a distance" is a flawed interpretation. It's just the universe maintaining self-consistency.
isn"t that Bell's theory of non-locality? NASA seem to think entanglement assisted communication method are very much possible with the use of superdense coding of single photons... it was experimental work in 2011 but they were already talking about use quantum mechanics to enhance classical communication medium and superdense teleportation :O
I mean, my brain can't work with "no it's impossible" :x
I mean, my brain can't work with "no it's impossible" :x
Non-locality doesn't necessarily mean faster than light communication is possible. Just that there are variables which aren't necessarily constrained by the speed of light. With the shoebox analogy, the fact that the boxes contain opposite shoes is a global variable. It remains true no matter how far apart they are in space even if which particular shoe is within which particular box hasn't been "decided" yet.
My understanding of that research is that it was for cryptographic purposes. It wasn't even attempting FTL communication, just a means of communicating securely without the possibility of eavesdropping and did not rely on being able to influence the state of entangled pairs. I could be mistaken though.
Even if it were the case, governments and companies research some wild shit sometimes, just in case. There's been government research on psychic phenomenon, astral projection, teleportation, etc. That doesn't even necessarily mean the people directly involved in the research took it particularly seriously. There was just an understanding that, if any of this stuff were real, it would be an absolute game changer: a huge leap forward scientifically/strategically.