Abstract
A simple geometrical criterion gives experimentally friendly sufficient conditions for entanglement. Its generalization gives a necessary and sufficient condition. It is linked with a family of entanglement identifiers, which is strictly richer than the family of entanglement witnesses.
- Received 28 November 2007
DOI:https://doi.org/10.1103/PhysRevLett.100.140403
©2008 American Physical Society