Geometry of skew information-based quantum coherence

Zhao-Qi Wu,Huai-Jing Huang,Shao-Ming Fei,Xian-Qing Li-Jost

Figure 4. Surfaces of constant ${C}_{{I}}{\left({\rho }_{z}^{{\rm{X}}}\right)}_{{a}_{1}}$ with fixed r and s: (a) $r=s=0.1,{C}_{{I}}{\left({\rho }_{z}^{{\rm{X}}}\right)}_{{a}_{1}}=0.1;$ (b) $r=s=0.3,{C}_{{I}}{\left({\rho }_{z}^{{\rm{X}}}\right)}_{{a}_{1}}=0.1;$ (c) $r=s=0.1,{C}_{{I}}{\left({\rho }_{z}^{{\rm{X}}}\right)}_{{a}_{1}}=0.5;$ (d) $r=s=0.3,{C}_{{I}}{\left({\rho }_{z}^{{\rm{X}}}\right)}_{{a}_{1}}=0.5$.