  We quantify the amount of correlation generated between two different output
modes in the process of im- perfect cloning and deletion processes. We use
three different measures of correlations and study their role in determining
the fidelity of the cloning and deletion. We obtain a bound on the total
correlation generated in the successive process of cloning and deleting
operations. This displays a new kind of complementary relationship between the
quantum correlation required in generating a copy of a quantum state and the
amount of correlation required in bringing it back to the original state by
deleting and vice versa. Our result shows that better we clone (delete) a
state, more difficult it will be to bring the state back to its original form
by the process of deleting (cloning).
