It sounds like the magnetic field is somehow interacting with the photon/nucleus/electron absorbtion/re-emission. The photons don't feel the magnetic field, but the combined system appears as if they do?
It's like how light appears to slow down in a material: it isn't actually slower, but the photon re-emission makes it appear so.
Understanding landau levels is important for optimizing light/matter interactions to improve signal to noise in future chips that incorporate light and electron motion for computation gains.
https://www.nature.com/articles/s41566-024-01425-y
Light is not feeling a magnetic field, its a different mechanism
It's like how light appears to slow down in a material: it isn't actually slower, but the photon re-emission makes it appear so.
(not a physicist)
Isn't this huge news? Discrete energy levels for photons?