Sorry, maybe I was unclear at the start there.
The point was that it seems unlikely qualia will appear in physics, but an explanation in terms of neurology isn't as far-fetched.
What I mean is that accepting what seems to be correct, more or less, from current understanding of science, we seem to be composed of interacting cells and yet have subjective experience. If someone does, somehow, come up with a good explanation for why we have subjective experience, that explanation ought to be able to allow you to determine, at least in principle, whether any kind of matter interacting does or doesn’t have subjective experience – whether that’s another person, or a piece of software running on a computer, or something even weirder like an entire country operating collectively through the behavior of its constituent citizens.
Hmm. Have you heard of consciousness studies? It's becoming more and more of a serious field, and it's basically what you're describing.