Disproving the conjecture on structural physical approximation to optimal decomposable entanglement witnesses
classification
🪐 quant-ph
keywords
conjectureentanglementwitnessesdecomposableoptimalphysicalstructuralapproximation
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We disprove the conjecture that structural physical approximations to optimal entanglement witnesses are separable states. The conjecture holds true for extremal decomposable entanglement witnesses.
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