Lower bound on concurrence and distillation for arbitrary-dimensional bipartite quantum states
Journal Article
·
· Physical Review. A
- Max Planck Institute for Mathematics in the Sciences, D-04103 Leipzig (Germany)
- Department of Mathematics, School of Science, South China University of Technology, Guangzhou 510640 (China)
We present a lower bound of concurrence for arbitrary-dimensional bipartite quantum states. This lower bound may be used to improve all the known lower bounds of concurrence. Moreover, the lower bound gives rise to an operational sufficient criterion of distillability of quantum entanglement. The significance of our result is illustrated by quantitative evaluation of entanglement for entangled states that fail to be identified by the usual concurrence estimation method and by showing the distillability of mixed states that cannot be recognized by other distillability criteria.
- OSTI ID:
- 22095582
- Journal Information:
- Physical Review. A, Vol. 84, Issue 6; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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