While it can be useful in some cases to abstract away all but 2 levels of the atoms used for quantum computing, it should not be forgotten that these qubit hosts often have many levels capable of participating in processing tasks.  These include long-lived states within hyperfine, Zeeman, and electronic-state structure in atoms, but extend to rotational, vibrational, and more exotic level landscapes if one considers molecules instead of just atoms.  Given the effectively atom-limited regime in which many (possibly all) atomic processors currently operate, I will pose the question of how can more-flexible encodings that utilize beyond-qubit levels improve the computational power of these devices.

More information about Dr Campbell can be found here: Campbell Group