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

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math.OA2014★ 1 cited

Construction of exposed indecomposable positive linear maps between matrix algebras

Kil-Chan Ha, Seung-Hyeok Kye

We construct a large class of indecomposable positive linear maps from the $2 \times 2$ matrix algebra into the $4 \times 4$ matrix algebra, which generate exposed extreme rays of th…

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…