The resource theory of quantum coherence studies the off-diagonal elements of a density matrix in a distinguished basis, whereas the resource theory of purity studies all deviations from the maximally mixed state.We establish a Human exposure to piroplasms in Central and Northern Italy direct connection between the two resource theories, by identifying purity as the maximal coherence which is achievable by unitary operations.The states that saturate this maximum identify a universal family of maximally coherent mixed states.These states are optimal resources under maximally incoherent operations, and thus independent of the way coherence is quantified.For all distance-based coherence quantifiers the maximal coherence can be evaluated exactly, and is shown to coincide with the corresponding distance-based purity quantifier.
We further show that D’une lecture croisée d’Agamben et d’un concert des Young Godsou de la question de la contemporanéité dans la pop’ purity bounds the maximal amount of entanglement and discord that can be generated by unitary operations, thus demonstrating that purity is the most elementary resource for quantum information processing.