Bell-diagonal states g We can express the state as o For Bell-diagonal state, the measurements for minimizing the quantum discord and geometry measure of QD can be easily calculated, which are the same that is (±a)/2,|=max() I±a,)/2 maX lc (±a3)/2,!=max(c Thus. the dynamic with the two optimizations is the same for Bell-diagonal states S.L. Luo, Phys. Rev. A77, 042303(2008)Bell-diagonal states ❖ We can express the state as: ❖ For Bell-diagonal state, the measurements for minimizing the quantum discord and geometry measure of QD can be easily calculated, which are the same, that is: S.L.Luo,Phys. Rev. A 77, 042303 (2008) ( ) ( ) ( ) ( ) ( ) ( ) 1 1 2 2 3 3 / 2, max / 2, max / 2, max i A i i I c c I c c I c c      =   =  =     =  Thus, the dynamic with the two optimizations is the same for Bell-diagonal states