Einstein–Podolsky–Rosen steering and the steering ellipsoid
Einstein–Podolsky–Rosen steering and the steering ellipsoid
The question of which two-qubit states are steerable (i.e.permit a demonstration of EPR-steering) remains open.Here, a strong necessary condition is obtained for the steerability of two-qubit states having maximally-mixed reduced states, via the construction of local hidden state models.It is conjectured that this condition is in fact sufficient.Two provably sufficient …