Unified approach to geometric and positive-map-based nonlinear entanglement identifiers
Marcin Markiewicz , Adrian Kołodziejski , Zbigniew Puchała , Adam Rutkowski , Tomasz Tylec , Wiesław Laskowski
AbstractDetecting 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.
|Journal series||Physical Review A, ISSN 1050-2947, (A 35 pkt)|
|Publication size in sheets||0.5|
|Score|| = 35.0, ArticleFromJournal|
= 35.0, ArticleFromJournal
|Publication indicators||: 2014 = 2.808 (2) - 2014=2.628 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.