[cameronperot]

> Anyone familiar with the term? Haven't heard it before.

Full-stack probably means they deal with all areas of QC, from theoretical research to hardware implementation.

> I thought quantum computing was still in the research phase? What's there to scale?

IMO it is still largely in the research phase, but actual quantum computers do exist. The thing to scale would be the number of physical and logical (error-corrected) qubits. Quantum error correction is difficult though, and will take a lot of work to get scalable QCs with error correction. With some of the current schemes being pursued today, the number of physical qubits per logical qubit is quite high (e.g. 17 physical per one logical in Surface-17).