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Local and nonlocal contents in N-qubit generalized Greenberger-Horne-Zeilinger states
- Authors
- Ren, Chang-Liang; Choi, Mahn-Soo
- Issue Date
- 9-11월-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW A, v.82, no.5
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW A
- Volume
- 82
- Number
- 5
- ISSN
- 1050-2947
- Abstract
- We investigate local contents in N-qubit generalized Greenberger-Horne-Zeilinger (GHZ) states. We suggest a decomposition for correlations in the GHZ states into a nonlocal and fully local part, and find a lower and upper bound on the local content. Our lower bound reproduces the previous result for N = 2 [V. Scarani, Phys. Rev. A 77, 042112 (2008)] and decreases rapidly with N.
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