Optimal entanglement witnesses from generalized reduction and Robertson maps
classification
🪐 quant-ph
math-phmath.MP
keywords
entanglementmapsoptimalpositivereductionrobertsonwitnessesalgebras
read the original abstract
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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