We consider the geometric global quantum discord （GGQD） of two-qubit systems. By analyzing the symmetry of geometric global quantum discord we give an approach for deriving analytical formulae of the extremum proble...We consider the geometric global quantum discord （GGQD） of two-qubit systems. By analyzing the symmetry of geometric global quantum discord we give an approach for deriving analytical formulae of the extremum problem which lies at the core of computing the GGQD for arbitrary two-qubit states. Furthermore, formulae of GGQD of arbitrary two-qubit states and some concrete examples are presented.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11275131,11305105,and 11271138)Simons Foundation(Grant No.198129)
文摘We consider the geometric global quantum discord （GGQD） of two-qubit systems. By analyzing the symmetry of geometric global quantum discord we give an approach for deriving analytical formulae of the extremum problem which lies at the core of computing the GGQD for arbitrary two-qubit states. Furthermore, formulae of GGQD of arbitrary two-qubit states and some concrete examples are presented.
