arXiv:quant-ph/0610219AbstractReferencesReviewsResources
Concurrence of superposition
Chang-shui Yu, X. X. Yi, He-shan Song
Published 2006-10-26Version 1
The bounds on concurrence of the superposition state in terms of those of the states being superposed are studied in this paper. The bounds on concurrence are quite different from those on the entanglement measure based on von Neumann entropy (Phys. Rev. Lett. 97, 100502 (2006)). In particular, a nonzero lower bound can be provided if the states being superposed are properly constrained.
Comments: 4 pages
Journal: Phys. Rev. A 75, 022332 (2007)
Categories: quant-ph
Keywords: concurrence, nonzero lower bound, von neumann entropy, entanglement measure, superposition state
Tags: journal article
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