1204.2982 (Samuel Portmann et al.)

The local content of all pure two-qubit states    [PDF]

Samuel Portmann, Cyril Branciard, Nicolas Gisin

The (non-)local content in the sense of Elitzur, Popescu, and Rohrlich (EPR2) [Phys. Lett. A 162, 25 (1992)] is a natural measure for the (non-)locality of quantum states. Its computation is in general difficult, even in low dimensions, and is one of the few open questions about pure two-qubit states. We present a complete solution to this long-lasting problem.

View original: http://arxiv.org/abs/1204.2982