Bath now has information about the central Qbit stored in the bath.
Any measurement of cQbit changes the state of cQbit and destroys any correlation with the bath.
Regardless of the state of cQbit: you can rebuild the cQbit with the information about cQbit stored in the bath.
f(bath)=> cQbit = compose(bath)
This effect seems trivial as I've explained it. So I assume I got something wrong.
Is it just the process of restoring from the bath into the cQbit that's complicated, or has a bunch of gotcha's? It seems like the state of the cQbit is inconsequential if you can just overwrite (:ah... the gotcha) it with the info from the bath.
f(cQbit)=> bath = decompose(cQbit)
Bath now has information about the central Qbit stored in the bath.
Any measurement of cQbit changes the state of cQbit and destroys any correlation with the bath.
Regardless of the state of cQbit: you can rebuild the cQbit with the information about cQbit stored in the bath.
f(bath)=> cQbit = compose(bath)
This effect seems trivial as I've explained it. So I assume I got something wrong.
Is it just the process of restoring from the bath into the cQbit that's complicated, or has a bunch of gotcha's? It seems like the state of the cQbit is inconsequential if you can just overwrite (:ah... the gotcha) it with the info from the bath.