I did my PhD in that area, building the first working superconducting quantum processor (working in the sense of showing quantum speed up, although practically useless of course). That was one of the most fun things I did my entire life, I basically could work on all of the aspects of the computer from the cryostat, the microwave setup, control electronics, PCB manufacturing, chip design and fabrication, soldering, measurement software (written in Python and C++) to doing quantum theory calculations and analysing and visualising data. Nothing I did in my software career ever came close to that level of satisfaction (though there was also a ton of frustration involved).

So yeah I would be happy to work in that area again, though today there aren't that many well paying jobs there yet so I would take a big pay cut if doing that work, but if I wouldn't need to worry about money I would definitely work in that area again.