activity
20092026
most citedConstruction of multi-qubit optimal genuine entanglement witnesses

21 citations · 83 across the 22 of their papers we have counts for

collaborators

25 papers

quant-ph2026

Bi-qutrit entangled edge states of positive partial transposes with largest ranks

Kyung Hoon Han, Seung-Hyeok Kye

Whenever is an eight dimensional subspace of the bi-qutrit quantum system whose orthogonal complement is spanned by a vector of Schmidt rank three, we show that there exist PPT…

physics.chem-ph2026

Categorification of Chemical Reactions: a bottom-up tower from stoichiometry to quantum structure

Kyunghoon Han

Chemistry's rules carry exceptions: the octet rule, Hess's Law, detailed balance, orbital symmetry selection rules, all with disclaimers memorised separately. Their cause: a questi…

quant-ph2025

Supporting hyperplanes for Schmidt numbers and Schmidt number witnesses

Kyung Hoon Han, Seung-Hyeok Kye

We consider the compact convex set of all bi-partite states of Schmidt number less than or equal to , together with that of -blockpositive matrices of trace one, which play t…

quant-ph2025

Global locations of Schmidt number witnesses

Kyung Hoon Han, Seung-Hyeok Kye

We investigate global locations of Schmidt number witnesses which are outside of the convex set of all bipartite states. Their locations are classified by interiors of faces of the…

quant-ph2024

Choi matrices revisited. III

Kyung Hoon Han, Seung-Hyeok Kye

We look for all linear isomorphisms from the mapping spaces onto the tensor products of matrices which send -superpositive maps onto unnormalized bi-partite states of Schmidt nu…

math.OA2023

Infinite dimensional analogues of Choi matrices

Kyung Hoon Han, Seung-Hyeok Kye, Erling Størmer

For a class of linear maps on a von Neumann factor, we associate two objects, bounded operators and trace class operators, both of which play the roles of Choi matrices. Each of th…