45 citations · 160 across the 22 of their papers we have counts for
20 papers · 1 filter
Complete security analysis of {quantum key distribution} based on unified model of sequential discrimination strategy
Min Namkung, Younghun Kwon
The quantum key distribution for multiparty is one of the essential subjects of study. Especially, without using entangled states, performing the quantum key distribution for multi…
Design of Quantum error correcting code for biased error on heavy-hexagon structure
Younghun Kim, Jeongsoo Kang, Younghun Kwon
Surface code is an error-correcting method that can be applied to the implementation of a usable quantum computer. At present, a promising candidate for a usable quantum computer i…
Complete analysis to minimum-error discrimination of mixed four qubit states with arbitrary prior probabilities
Donghoon Ha, Younghun Kwon
In this work, we provide a complete analysis to minimum-error discrimination of mixed four qubit states with arbitrary prior probabilities. For the complete anaysis, the most impor…
Qubit State Discrimination using Post-measurement Information
Donghoon Ha, Jeong San Kim, Younghun Kwon
We consider the optimal discrimination of nonorthogonal qubit states with post-measurement information and provide an analytic structure of the optimal measurements. We also show t…
Distilling Entanglement with Noisy Operations
Jinho Chang, Joonwoo Bae, Younghun Kwon
Entanglement distillation is a fundamental task in quantum information processing. It not only extracts entanglement out of corrupted systems but also leads to protecting systems o…
An optimal discrimination of two mixed qubit states with a fixed rate of inconclusive results
Donghoon Ha, Younghun Kwon
In this paper we consider the optimal discrimination of two mixed qubit states for a measurement that allows a fixed rate of inconclusive results(FRIR). Our strategy for the proble…