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by jerf 4460 days ago
Stating whether FTL communication is possible at all may require hedging. Stating that it can't occur over quantum superposition does not, as I understand it. The math is clear; there's no information traveling. It does not matter how sophisticated our quantum computers get, there will not be any FTL communication coming out of them.

If we could do that at all, we'd almost certainly be able to to it today, anyhow. We have multi-q-bit QM computers, they just aren't of a practical size for computation. But if FTL communication was possible, it would have been done with them already.