Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Ha, Donghoon"'
In quantum state discrimination, nonlocality arises when the optimal state discrimination cannot be realized by local operations and classical communication. Recently, it has been found that the postmeasurement information about the subensemble conta
Externí odkaz:
http://arxiv.org/abs/2412.17435
Autor:
Ha, Donghoon, Kim, Jeong San
Publikováno v:
Scientific Reports, 14 23815 (2024)
We consider multipartite quantum state discrimination and provide a specific relation between the properties of entanglement witness and quantum nonlocality inherent in the confidence of measurements. We first provide the definition of the confidence
Externí odkaz:
http://arxiv.org/abs/2405.20586
Autor:
Ha, Donghoon, Kim, Jeong San
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 discrimination of multi-party quantum states, we construct a multi-player
Externí odkaz:
http://arxiv.org/abs/2403.14363
Autor:
Ha, Donghoon, Kim, Jeong San
Publikováno v:
Physical Review A, 109, 052418 (2024)
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 optimal local discrimination of bipartite quantum states, we provide a su
Externí odkaz:
http://arxiv.org/abs/2311.06029
Autor:
Ha, Donghoon, Kim, Jeong San
Publikováno v:
Journal of Physics A: Mathematical and Theoretical, 56, 205303 (2023)
We consider multipartite quantum state discrimination and show that the minimum-error discrimination by separable measurements is closely related to the concept of entanglement witness. Based on the properties of entanglement witness, we establish so
Externí odkaz:
http://arxiv.org/abs/2301.05420
Autor:
Ha, Donghoon, Kim, Jeong San
Publikováno v:
Phys. Rev. A 107, 052410 (2023)
We consider bipartite quantum state discrimination using positive-partial-transpose measurements and show that minimum-error discrimination by positive-partial-transpose measurements is closely related to entanglement witness. By using the concept of
Externí odkaz:
http://arxiv.org/abs/2212.10799
Autor:
Ha, Donghoon, Kim, Jeong San
Publikováno v:
Scientifc Reports 12, 14130 (2022)
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 provide a necessary and sufficient condition to realize the upper bound.
Externí odkaz:
http://arxiv.org/abs/2204.12830
Autor:
Ha, Donghoon, Kim, Jeong San
Publikováno v:
Phys. Rev. A 105, 032421 (2022)
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 necessary and sufficient condition for a measurement to realize the u
Externí odkaz:
http://arxiv.org/abs/2112.14424
Autor:
Ha, Donghoon, Kim, Jeong San
Publikováno v:
Scientific Reports, 12, 3961 (2022)
The phenomenon of nonlocality without entanglement(NLWE) arises in discriminating multi-party quantum separable states. Recently, it has been found that the post-measurement information about the prepared subensemble can lock or unlock NLWE in minimu
Externí odkaz:
http://arxiv.org/abs/2112.01139
Autor:
Ha, Donghoon, Kwon, Younghun
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 important work to do is to find the necessary and sufficient conditions for
Externí odkaz:
http://arxiv.org/abs/2111.07726