Can you say "the state secures that people do not have any emotions"? Or does secure have to be followed by a noun or even a gerund? Like: "the state secures a lack of emotions" or "the state secures people not having any emotions" My dictionaries are not forthcoming on this issue!
I think the way you're thinking of
secure is right on the edge of what the word means. To secure something provides assurance that that something is safe, or true. I think the word you're looking for is more like:
"The state ensures that people do not have any emotions" "The state assures there are no emotions"
To use the word secure in a sentence like this, I'd say...
"The state has secured a hold on all citizens' emotions" "The state has secured control over emotions" "The state has secured emotional leverage over citizens" "The ability to control emotion has been secured by the state"