To start off with, it doesn't simply say quantum light in the last paragraph of the article (only reference to that term in all of the article) but quantum ligh

To start off with, it doesn't simply say quantum light in the last paragraph of the article (only reference to that term in all of the article) but quantum light transistor. So maybe it's just a typo in the headline. And regarding the last paragraph: Does reading it as (quantum (light transistor)) instead of ((quantum light) transistor) make more sense? I'm not sure if something like a classical optical transistor is possible but if yes then that might justify explicitely mentioning quantum here.