Abstract

The quantum correlations of qubit-qudit states that satisfy the constraint of having coherences only between elements of the computational basis with the same number excitations and that occur naturally in the Jaynes-Cummings model are studied. It is numerically shown that for states with positive partial transpose it is always possible to construct a convex hull of separable states and it is also analytically shown that they posses discord if and only if the have at least one non-zero coherence.

© 2013 Optical Society of America