Abstract
We construct multipartite entangled states with underlying W-type structuresatisfying positive partial transpose (PPT) condition under any (N −1)|1 partition. Then we showhow to distill a N-partite secure key from the states using two different methods: direct applicationof local filtering and novel random key distillation scheme in which we adopt the idea from recentresults on entanglement distillation. Open problems and possible implications are also discussed.
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
EPL-EUROPHYS LETT
no. 85,
pages 0 - 6,
ISSN: 0295-5075 - Language:
- English
- Publication year:
- 2009
- Bibliographic description:
- Augusiak R., Horodecki P.: W-like bound entangled states and secure key distillation// EPL-EUROPHYS LETT. -Vol. 85, nr. Nr. 5, March (2009), s.0-6
- DOI:
- Digital Object Identifier (open in new tab) 10.1209/0295-5075/85/50001
- Verified by:
- Gdańsk University of Technology
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