@article{bibcite_15278, author = {Marcin Markiewicz and Adrian Kolodziejski and Zbigniew Pucha{\l}a and Adam Rutkowski and Tomasz Tylec and Wieslaw Laskowski}, title = {Unified approach to geometric and positive-map-based non-linear entanglement identifiers}, 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.
}, year = {2018}, journal = {Phys. Rev. A }, volume = {97}, pages = {042339}, url = {https://doi.org/10.1103/PhysRevA.97.042339}, doi = {10.1103/PhysRevA.97.042339}, language = {eng}, }