Optimal entanglement witnesses from generalized reduction and Robertson maps

Details Optimal entanglement witnesses from generalized reduction and Robertson maps Optimal entanglement witnesses from generalized reduction and Robertson maps

2010-12-06

arxiv.org/abs/1012.1124v2

J. Phys. A: Math. Theor. 44 (2011) 165304

Physics

Quantum Physics

14 pages

Scientific paper

We provide a generalization of the reduction and Robertson positive maps in
matrix algebras. They give rise to a new class of optimal entanglement
witnesses. Their structural physical approximation is analyzed. As a byproduct
we provide a new examples of PPT (Positive Partial Transpose) entangled states.

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