Unified approach to geometric and positive-map-based non-linear entanglement identifiers [1]
Tytuł | Unified approach to geometric and positive-map-based non-linear entanglement identifiers |
Publication Type | Journal Article |
Rok publikacji | 2018 |
Autorzy | Markiewicz M [2], Kolodziejski A [3], Puchała Z [4], Rutkowski A [5], Tylec T [6], Laskowski W [7] |
Journal | Phys. Rev. A |
Volume | 97 |
Abstract | Detecting quantumness of correlations (especially entanglement) is a very hard task even in the simplest case, i.e., two-partite quantum systems. Here we provide an analysis of whether there exists a relation between two of the most popular types of entanglement identifiers: the first one based on positive maps and not directly applicable in the laboratory and the second one a geometric entanglement identifier which is based on specific Hermiticity-preserving maps. We show a profound relation between those two types of entanglement criteria. Hereunder we have proposed a general framework of nonlinear functional entanglement identifiers which allows us to construct experimentally friendly entanglement criteria. |
URL | https://doi.org/10.1103/PhysRevA.97.042339 [8] |
DOI | 10.1103/PhysRevA.97.042339 [9] |