I've never seen "sweep" used this way. It is either a very rare usage, or a new noun created by the author on the basis of certain uses of the verb "to sweep". However, it makes sense, and feels "right".
So, which uses of the verb "to sweep" is it referring to?
First, "To move smoothly and gracefully, without pausing"
"Judy gracefully swept through the room in her evening gown, smiling at everyone but never pausing to talk to them."
I would say that it also might refer to the idiom "sweep someone off their feet", meaning "cause a strong reaction of love or admiration"
"Sam's dancing skills and ability to recite love poems swept Jill off her feet."