Fig. 2
From: Daemonic ergotropy: enhanced work extraction from quantum correlations
Distribution of two-qubit states in the daemonic gain-vs.-discord plane. We have generated 3 × 103 general random states of system and ancilla, evaluating the discord and daemonic gain for each of them (blue dots). The blue curves enclosing the distribution correspond to the boundaries discussed in the body of the paper. Notice that states with no quantum correlations may correspond to arbitrarily large values of the daemonic gain \(\delta {\cal W}\)
