2013/03/02 by Zbigniew Walczak, Walczak, Zbigniew, Iwona Wintrowicz +4
Computer Science · Mathematics · Physics and Astronomy · #Classical capacity #Diagonal #FOS: Physical sciences #Geometry #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph) #Quantum correlation #Quantum discord #Quantum dynamics #Quantum mechanics #Qubit #Statistical physics #quant-ph
paper · pdf · doi:10.48550/arxiv.1303.0366
7 pages, 2 figures. This is an entirely revised version of the previous article. All comments are welcome and appreciated
openalex publication_date 2013/03/02 · arxiv created 2014/08/18 · arxiv updated 2014/08/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recently, it has been shown that there exist quantum states for which quantum correlations dominate over classical correlations. Inspired by this observation, we investigate the problem of quantum correlations dominance for two-qubit Bell diagonal states in the Ollivier--Zurek paradigm, using both entropic and geometric approach to quantification of classical and quantum correlations. In particular, we estimate numerically the amount of two-qubit Bell diagonal states for which quantum correlations dominate over classical correlations, and vice versa. Moreover, we show that in general these two approaches to quantification of correlations provide ambiguous results.