Okay, well I've got a piece of paper that says I'm a Computer Scientist, but I'm still trying to grok what distinction you see between an "active computer" and a "passive computer" (let's leave "quantum" out of it for now).
You use the word "process" as part of what a "passive computer" does, but that's all that's required in order to "interface, encode and manipulate."
Its probably not so much the "quantum" part that is the problem here, but its in figuring out what you actually want the concept of "computer" to do to move your storyline along.
Support the Writer's Guild of America!

Buffy