Abstract
We show that any state that violates the computable cross norm (or realignment) criterion for separability also violates the separability criterion of the local uncertainty relations. The converse is not true. The local uncertainty relations provide a straightforward construction of nonlinear entanglement witnesses for the cross norm criterion.
- Received 24 April 2006
DOI:https://doi.org/10.1103/PhysRevA.74.010301
©2006 American Physical Society