期刊
PHYSICAL REVIEW A
卷 81, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.81.052308
关键词
-
资金
- Polish Ministry of Science and Higher Education [3004/B/H03/2007/33, UMK 370-F]
We show that each entanglement witness detecting a given bipartite entangled state provides an estimation of its concurrence. We illustrate our result with several well-known examples of entanglement witnesses and compare the corresponding estimation of concurrence with other estimations provided by the trace norm of partial transposition and realignment.
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