Bipartite quantum state discrimination and decomposable entanglement witness

Autor:	Ha, Donghoon, Kim, Jeong San
Rok vydání:	2022
Předmět:	Quantum Physics
Zdroj:	Phys. Rev. A 107, 052410 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.107.052410
Popis:	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 decomposable entanglement witness, we establish conditions on minimum-error discrimination by positive-partial-transpose measurements. We also provide conditions on the upper bound of the maximum success probability over all possible positive-partial-transpose measurements. Finally, we illustrate our results using examples of multidimensional bipartite quantum states. Comment: 14 pages, 1 figure
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2212.10799 Zobrazit plný text záznamu View this record from Arxiv