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- Publisher
- Springer Journals
- Copyright
- Copyright © 2011 by Springer Science+Business Media, LLC
- Subject
- Physics; Computer Science, general; Theoretical, Mathematical and Computational Physics; Quantum Physics; Mathematics, general; Physics, general
- ISSN
- 1570-0755
- eISSN
- 1573-1332
- DOI
- 10.1007/s11128-011-0247-9
- Publisher site
- See Article on Publisher Site
Abstract
In this paper, we propose a concurrence vector for a multipartite qudit pure state based on its coefficient matrices and define its norm as the generalized concurrence. Moreover, we prove that this generalized concurrence is a good measure according to the three necessary conditions that any measure of entanglement has to satisfy, i.e. it equals zero if and only if the state is separable, it remains invariant under local unitary transformations, and it is not increasing under local operations and classical communication. This generalized concurrence is very practical and convenient for computation.
Journal
Quantum Information Processing – Springer Journals
Published: May 20, 2011