[abdullahkhalids]

"Good" [1] Bell experiments have already been performed by several groups, giving us high confidence that any local hidden variables theory is incorrect. So, there is very little controversy over the matter. Moreover, the Bell test here is not a "good" Bell test, since the results were post-selected i.e. only some experimental data points were selectively used.

The important part of the paper is the first result about two-photon interference. It shows that two photons from Sun and Earth can be made indistinguishable from each other and hence show maximum interference. This is evidence for the postulate of quantum theory that all photons (or other fundamental particles) can be made identical to each other.

[1] that take care of all prerequisite conditions of Bell's theorem. Also called loop-hole free Bell experiments. See https://en.wikipedia.org/wiki/Bell_test_experiments#Hensen_e...