Kil-Chan Ha

activity

20032021

most citedEntangled states with positive partial transpose arising from indecomposable positive linear maps

60 citations · 364 across the 22 of their papers we have counts for

collaborators

Showing 2013Show all

3 papers · 1 filter

quant-ph2013

Global geometric difference between separable and Positive partial transpose states

Kil-Chan Ha, Seung-Hyeok Kye

In the convex set of all $3\ot 3$ states with positive partial transposes, we show that one can take two extreme points whose convex combinations belong to the interior of the conv…

quant-ph2013★ 16 cited

Geometry for separable states and construction of entangled states with positive partial transposes

Kil-Chan Ha, Seung-Hyeok Kye

We construct faces of the convex set of all $2 \otimes 4$ bipartite separable states, which are affinely isomorphic to the simplex $Δ_{9}$ with ten extreme points. Every interior po…

math.OA2013

Notes on extremality of the Choi map

Kil-Chan Ha

It is widely believed that the Choi map generates an extremal ray in the cone $P (M_{3})$ of all positive linear maps between $C^{*}$ -algebra $M_{3}$ of all $n \times n$ matrices…