Quantum Correlations in a Family of Two-Qubit Separable States
Biao‐Liang Ye, Yi-Min Liu, Chunjie Xu, Xiansong Liu, Zhanjun Zhang · Communications in Theoretical Physics · 2013
Quantum correlations in a family of two-qubit separable classical-quantum correlated states are intensively studied with four different approaches, namely, quantum discord [Phys. Rev. Lett. 88 (2002) 017901], measurement-induced disturbance (MID) [ Phys. Rev. A 77 (2008) 022301 ], ameliorated MID [ J. Phys. A: Math. Theor. 44 (2011) 352002 ] and quantum dissonance [ Phys. Rev. Lett. 104 (2010) 080501 ]. Quantum correlations captured with different approaches are compared and discussed so that their three distinct features are exposed.