Well, photons are identical to antiphotons, so light is identical to “antilight”.
What is an antiphoton? Is this some theoretical construct that I’m not familiar with? Honestly asking.
Close.
Excited positrons emit “anti-light” with a left-hand spin when they move from a higher energy state to a lower one.
Excited electrons emit “light” with a right-hand spin.
(Spin here relates to how the electric and magnetic forces interact.)
For some reason, when matter and anti-matter anhillate, the resulting energy has a right-hand spin that corresponds to matter (not anti-matter).
Why? We have no idea. That’s part of what they’re trying to figure out.
/Just my understanding...