Abstract:
Quantum correlation in a pair {ε,η} of quantum ensembles is studied and computed.In quantum information theory, a quantum state of a quantum system lies in some state ρi at a certain probability pi through a quantum measurement. Thus, quantum states ρ1,ρ2,…,ρn and corresponding probabilities p1,p2,…,pn are obtained and so an ensemble ε={pi,ρi}ni=1 is presented.To do this, a 4-partite quantum state ρε,η is constructed, and based on quantum relative entropy, a measure function is defined in order to reveal the quantum correlation of the pair. Some properties of the measure function are proved.
