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Causality and the complete positivity of classical polarization maps

✍ Scribed by Gamel, Omar; James, Daniel F. V.


Book ID
115435025
Publisher
Optical Society of America
Year
2011
Tongue
English
Weight
88 KB
Volume
36
Category
Article
ISSN
0146-9592

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Characterizations are given for the positive and completely positive maps on n x 1~ complex matrices that leave invariant the diagonal entries or the kth elementary symmetric function of the diagonal entries, 1 < k < n. In addition, it is shown that such a positive map is always decomposable if n <