44 citations · 96 across the 20 of their papers we have counts for
20 papers
(2,m)-threshold quantum data hiding
Donghoon Ha, Jeong San Kim
We consider multiparty quantum state discrimination and present a multiparty quantum data-hiding scheme for one classical bit to be shared among multiple parties. In the proposed s…
Quantum data hiding with two-qubit separable states
Donghoon Ha, Jeong San Kim
We consider the discrimination of two-party quantum states and provide a quantum data-hiding scheme using two-qubit separable states. We first provide a bound on the optimal local…
Factorizability of optimal quantum sequence discrimination under maximum-confidence measurements
Donghoon Ha, Jeong San Kim
We consider the discrimination of quantum sequences under maximum-confidence measurements and show that the optimal discrimination of a quantum sequence ensemble can always be fact…
Factorizability of multi-party quantum sequence discrimination under local operations and classical communication
Donghoon Ha, Jeong San Kim
We consider multi-party quantum sequence discrimination under local operations and classical communication(LOCC), and provide conditions under which the optimal LOCC discrimination…
Quantum data-hiding scheme using orthogonal separable states
Donghoon Ha, Jeong San Kim
We consider bipartite quantum state discrimination and present a quantum data-hiding scheme utilizing an orthogonal separable state ensemble. Using a bound on local minimum-error d…
Postmeasurement information and nonlocality of quantum state discrimination
Jinhyeok Heo, Donghoon Ha, Jeong San Kim
In quantum state discrimination, nonlocality arises when optimal discrimination cannot be achieved using only local operations and classical communication. It has recently been sho…
Entanglement witness and nonlocality in confidence of measurement from multipartite quantum state discrimination
Donghoon Ha, Jeong San Kim
We consider multipartite quantum state discrimination and provide a specific relation between the properties of entanglement witness and quantum nonlocality inherent in the confide…
Multi-player quantum data hiding by nonlocal quantum state ensembles
Donghoon Ha, Jeong San Kim
We provide multi-player quantum data hiding based on nonlocal quantum state ensembles arising from multi-party quantum state discrimination. Using bounds on local minimum-error dis…
Nonlocal quantum state ensembles and quantum data hiding
Donghoon Ha, Jeong San Kim
We consider the discrimination of bipartite quantum states and establish a relation between nonlocal quantum state ensemble and quantum data hiding processing. Using a bound on opt…
Entanglement witness and multipartite quantum state discrimination
Donghoon Ha, Jeong San Kim
We consider multipartite quantum state discrimination and show that the minimum-error discrimination by separable measurements is closely related to the concept of entanglement wit…
Bipartite quantum state discrimination and decomposable entanglement witness
Donghoon Ha, Jeong San Kim
We consider bipartite quantum state discrimination using positive-partial-transpose measurements and show that minimum-error discrimination by positive-partial-transpose measuremen…
Bound on optimal local discrimination of multipartite quantum states
Donghoon Ha, Jeong San Kim
We consider the unambiguous discrimination of multipartite quantum states and provide an upper bound for the maximum success probability of optimal local discrimination. We also pr…
Bound on local minimum-error discrimination of bipartite quantum states
Donghoon Ha, Jeong San Kim
We consider the optimal discrimination of bipartite quantum states and provide an upper bound for the maximum success probability of optimal local discrimination. We also provide a…
Locking and unlocking of quantum nonlocality without entanglement in local discrimination of quantum states
Donghoon Ha, Jeong San Kim
The phenomenon of nonlocality without entanglement(NLWE) arises in discriminating multi-party quantum separable states. Recently, it has been found that the post-measurement inform…
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…
Annihilating and creating nonlocality without entanglement by postmeasurement information
Donghoon Ha, Jeong San Kim
Nonlocality without entanglement (NLWE) is a nonlocal quantum phenomenon that arises in separable state discrimination. We show that the availability of the postmeasurement informa…
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…
Quantum nonlocality without entanglement depending on nonzero prior probabilities in optimal unambiguous discrimination
Donghoon Ha, Jeong San Kim
Nonlocality without entanglement(NLWE) is a nonlocal phenomenon that occurs in quantum state discrimination of multipartite separable states. In the discrimination of orthogonal se…
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…
Complete analysis for three-qubit mixed-state discrimination
Donghoon Ha, Younghun Kwon
In this article, by treating minimum error state discrimination as a complementarity problem, we obtain the geometric optimality conditions. These can be used as the necessary and…