Physics – Quantum Physics
Scientific paper
2007-11-27
Phys. Rev. Lett. 100, 140403 (2008)
Physics
Quantum Physics
4 pages, journal version
Scientific paper
We present an intuitive geometrical entanglement criterion. It allows formulation of simple and experimentally friendly sufficient conditions for entanglement. The conditions are illustrated with several examples. Moreover, a generalization of our approach is a necessary and sufficient separability condition. It can be associated with a family of entanglement identifiers, which is strictly richer than the family of entanglement witnesses.
Badziag Piotr
Brukner Caslav
Laskowski Wiesław
Paterek Tomasz
Zukowski Marek
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