Bipartite quantum state discrimination and decomposable entanglement witness
arXiv:2212.10799 · doi:10.1103/PhysRevA.107.052410
Abstract
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.
arXiv comment14 pages, 1 figure
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