4 ms·
This is super interesting. Right now we are limited by communication due to latency from speed of light. With quantum entanglement, does that mean no latency ov
by ttol 12y ago
This is super interesting. Right now we are limited by communication due to latency from speed of light. With quantum entanglement, does that mean no latency over great distances? Or is there a latency involved, even in quantum entanglement?
- Keyframe 12y agoYou mean you would want to entangle two particles, move them apart over great distance and then use them to signal information, more or less instanteniously? That would not work.
- zem 12y agono, there's a theorem that states you cannot use quantum entanglement for communication: http://en.wikipedia.org/wiki/No-communication_theorem http://en.wikipedia.org/wiki/No-communication_theorem
- Filligree 12y agoWith one exception, you could use them for a synchronised random number generator. It's not as useful as you'd hope, since a cryptographic PRNG theoretically does the same thing (and you need to individually transport the bits ahead-of-time), but you can at least be sure the numbers are random and no-one is spying. Whether or not that counts as communication is up to you.
- ucho 12y agoHaving quantum entangled particles stored in some crystal sounds better than requiring direct optical cable connection between peers for some kinds of quantum computer resistant communication.
- vinceguidry 12y agoYou still need direct connection and you still need to do key exchange. Whether you're exchanging keys or quantum particles for the purpose of generating keys is immaterial for the purposes of security.
- Florin_Andrei 12y agoTo perform any communication via entanglement, you're required to also have a regular, (sub-)luminal side-channel, otherwise it doesn't work. So, no, instantaneous communication is not possible according to current science.