This crystal can split light particles

Maybe try not to use tennis balls. It's quantum fields, electromagnetic, maybe, and there are discrete events (which only happen at _very_ carefully engineered "event devices", not by themselves), but discrete bits of the quantum field not so much, insofar as we can take continuous superpositions of the energy eigenvectors that span the Fock-Hilbert space, and of course we can also use continuous statistical mixtures. You need a new paradigm. Try looking at the (very amateurish) video on my channel for a somewhat different way to think about quantum optics (or not, whatever). Needless to say, your videos are awesomely well produced.