32 citations · 33 across the 3 of their papers we have counts for
3 papers
quant-ph2012★ 1 cited
Optimal PPTES witnesses for states in
Kil-Chan Ha
Recently, X. Qi and J. Hou [Phys. Rev. A 85, 022334 (2012)] provided optimal entanglement witnesses without the spanning property. These witnesses are associated to indecomposable…
quant-ph2012★ 32 cited
Optimality for indecomposable entanglement witnesses
Kil-Chan Ha, Seung-Hyeok Kye
We examine various notions related with the optimality for entanglement witnesses arising from Choi type positive linear maps. We found examples of optimal entanglement witnesses w…
quant-ph2012
Geometry of the faces for separable states arising from generalized Choi maps
Kil-Chan Ha, Seung-Hyeok Kye
We exhibit examples of separable states which are on the boundary of the convex cone generated by all separable states but in the interior of the convex cone generated by all PPT s…