spotlessvoid wrote...
QEC isn't exactly space magic technology guys. They already did experiments using QE starting in the late 90s. Price and need have kept this in fledgling stage, but it's not anything new conceptually.
Except that quantum entanglement can't be used as a form of communication. There's even debate over what it
is. The only thing about it is that when two systems become entangled their states are directly related when observed. Were their states set when they became entangled? Do they collapse into their states upon observation? How fast is this link if it exists? More importantly, from what frame(s) of reference are they operating in*?
Either way, you can't use QEC to communicate, since no classical information is transmitted. You can use it to secure a subluminal communication, however. And theoretically you can
maybe use it for other useful purposes, but phoning home from Tau Ceti aint one of them. Then again, in ME ships can explicitly move faster than light even in their local frame and the violation of conservation of energy forms the bedrock of galactic technology, so yeah.
*This in particular bugs me. The common interpretation is that entangled pairs affect each other 'instantaneously'. Except we know very well that simultaneity is completely dependent on one's frame of reference, if there is no direct causal relationship. I won't get into this because this is exactly why FTL of any form is problematic (yes, even for wormholes and other similar shenanigans).
Modifié par Simon_Says, 30 octobre 2012 - 01:26 .