We investigate a two-qubit system to understand the relationship between concurrence and mutual information, where former determines amount of quantum entanglement, whereas latter is its classical residue after performing local projective measurement. For given ensemble random pure states, in which values are uniformly distributed, we calculate joint probability information. Although zero infor...

A bstract We derive the property of strong superadditivity mutual information arising from Markov vacuum state in a conformal field theory and subadditivity entanglement entropy. show this inequality encodes unitarity bounds for different types fields. These are precisely ones that saturate free This has natural explanation terms possibility localizing algebras on null surfaces. particular cont...