Entropic Lower Bound for Distinguishability of Quantum States

Figure 1

(a) Lower bounds for the optimal discrimination probability for the states in (14). (b) Lower bounds for the same set but with . The entropic lower bounds are plotted as the solid curves. For comparison, the lower bounds by the square-root measurement and the pairwise-overlap bounds are represented by the dashed and dot-dashed curves, respectively.

(a)

(b)