Improved bounds on some entanglement criteria in bipartite quantum systems

oleh: Liang Tang, Fan Wu

Format: Article
Diterbitkan: Elsevier 2023-08-01

Deskripsi

Entanglement detection is one of the core tasks in quantum information processing. Based on a broad class of informationally complete symmetric measurements, a series of separability criteria are proposed for different bipartite quantum systems using Cauchy–Schwarz inequality and ρ−ρA⊗ρB, respectively. In addition, by comparing and analyzing the existing entanglement criteria and detailed examples, it is not difficult to prove that our proposed criteria are more powerful and comprehensive in entanglement detection.