I can't speak for the parent, but I have a physics degree from 30 years ago. Since then my career has diverged from academic physics to the point where it would take some effort to re-learn even my graduate level QM coursework, much less familiarize with current research topics. So I could see where the "former" status comes from.
I guess "quantum physicist" can mean either an academic credential or a job title. In my case, I have the former but no longer the later. I finished my PhD nine years ago and no longer work in the field.
analog31|4 years ago
SinParadise|4 years ago
By disentangling himself with quantum physics. He was a quantum physicist, so I assume he knows how to do it.
shoyer|4 years ago