Estimating concurrence via entanglement witnesses
Journal Article
·
· Physical Review. A
- Institute of Physics, Nicolaus Copernicus University ul. GrudziaPdzka 5/7, PL-87-100 Torun (Poland)
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.
- OSTI ID:
- 21413366
- Journal Information:
- Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.052308; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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