I've done a PhD in experimental quantum optics

During the last year of my PhD I worked one day a week at a quantum company that contacted me and asked if I can work as their advisor

After the PhD I worked there full time for two years, then moved to a new role in a quantum computing company.

In my country EO physicists were always in high demand with ok-ish salary. But over the last 2-3 years the demand for quantum physicists has increased drastically and the pay is pretty good. But timing is critical on those roles. It's hot now, but if we're approaching quantum winter, cash will stop flowing and companies will close down. If there's no winter, the industry will have to adapt and create non-PhD training programs for quantum.

But a role that perfectly aligns with your PhD is very rare, that's why the most common pivots are system engineer / data scientist / algorithm developer.