Board Thread:Fiction Universe Discussion/@comment-4242472-20150504003042/@comment-47205-20150521065607

Quantum entanglement isn't a simple case of "make one particle do something and its entangled parter responds instantly"; it's more a matter of correlations between measurements and you need a classical information channel to get information out of it, as is what happens in so-called "quantum teleportation". The possibility that our understanding of quantum mechanics is wrong has also been very thoroughly tested many times (including experiments to see if FTL communication can occur via entanglement or such means), and these tests very consistently agree with QM.

Of course, we could ignore this in our fiction (it is, after all, fiction), but then we already have some fictional physics that allows for FTL to occur, namely hyperspace (and wormholes).