The thing is, this isn't even a challenge to any assumptions physicists have, or even a surprising result. Every prediction of quantum theory for these kinds of atomic systems has been borne out.
All this "weirdness" is the same old story of "Is it a particle or a wave?!," when in reality, we know its neither. Quantum objects are represented by wavefunctions, or vectors in a Hilbert space, to which "particle" and "wave" are intuitive approximations in certain regimes, that makes it easier for humans to talk about in natural, non-mathematical language.
All this experiment has shown is that a object that we expect to be described by quantum mechanics turns out to, indeed, be described by quantum mechanics.
All this "weirdness" is the same old story of "Is it a particle or a wave?!," when in reality, we know its neither. Quantum objects are represented by wavefunctions, or vectors in a Hilbert space, to which "particle" and "wave" are intuitive approximations in certain regimes, that makes it easier for humans to talk about in natural, non-mathematical language.
All this experiment has shown is that a object that we expect to be described by quantum mechanics turns out to, indeed, be described by quantum mechanics.