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Invariant indices of polarimetric purity

Invariant indices of polarimetric purity,10.1016/j.optcom.2010.08.077,Optics Communications,José J. Gil

Invariant indices of polarimetric purity   (Citations: 1)
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A proper set of indices characterizing the polarimetric purity of light and material media is defined from the eigenvalues of the corresponding coherency matrix. A simple and generalizable relation of these indices with the current parameter characterizing the global purity is obtained. A general definition for systems characterized by n×n positive semidefinite Hermitian matrices is introduced in terms of the corresponding eigenvalues and diagonal Gell–Mann matrices. The set of n−1 indices of purity has a nested structure and provides complete information about the statistical purity of the system.
Journal: Optics Communications - OPT COMMUN , vol. 284, no. 1, pp. 38-47, 2011
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