Unfortunately this article looks to me like another example of why Scientific American is no longer reliable as a layman's source of information (and hasn't been for quite some time--I stopped my subscription a couple of decades ago). Neither quantum tunneling, nor correlated measurement results on EPR photons, are examples of anything traveling "faster than light". The article headline is basically click bait.
The abstract of the actual paper referenced in the article is here:
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.77.1254
Key phrase: the "tachyonlike excitations...do not violate Einstein causality". That means nothing is actually traveling "faster than light" (and it also means that whatever is actually happening can be modeled
without having to use any actual tachyons with imaginary masses).