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Concurrence of arbitrary dimensional bipartite quantum states.
- Source :
-
Physical review letters [Phys Rev Lett] 2005 Jul 22; Vol. 95 (4), pp. 040504. Date of Electronic Publication: 2005 Jul 22. - Publication Year :
- 2005
-
Abstract
- We derive an analytical lower bound for the concurrence of a bipartite quantum state in arbitrary dimension. A functional relation is established relating concurrence, the Peres-Horodecki criterion, and the realignment criterion. We demonstrate that our bound is exact for some mixed quantum states. The significance of our method is illustrated by giving a quantitative evaluation of entanglement for many bound entangled states, some of which fail to be identified by the usual concurrence estimation method.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 95
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 16090790
- Full Text :
- https://doi.org/10.1103/PhysRevLett.95.040504