> i mean, what's the layman's description of a rabi cycle?
Ars technica tackled that without blinking in this article from 2010:
http://arstechnica.com/science/2010/10/riding-a-rabi-cycle-p...
It's tempting to dismiss lay explanations as impossible when you're assuming the laymen needs a full and complete understanding of every implication. But in lay explanations, you're not graded on completeness, you're just offering a foothold so people know generally what you're talking about and one or two implications.
What are we talking about? Quantum mechanics. What's that? When things are really tiny they seem to obey unexpected rules (of physics). So quantum mechanics describes the behavior of really tiny things. What's a rabi cycle? So you have some of these really tiny things, and they're flipping between two states, like a light switch. Maybe you shine a light on them to get them excited, and when they're excited in a certain way, they flip back and forth between these two states.
What does that get us? Maybe it helps us make lasers that have effects that are more focused than we would expect given diffraction limits--that's the limit of how focused light can get based on the properties of the lens you're using.