Ambrozie, C.Gheondea, Aurelian2019-02-212019-02-2120181220-3874http://hdl.handle.net/11693/50480We present a few techniques to find completely positive maps between full matrix algebras taking prescribed values on given data, based on semidefinite programming, convex minimization supported by a numerical example, as well as representations by linear functionals. The particular case of commutative data is also discussed.EnglishChoi matrixCompletely positiveConvex minimizationInterpolationQuantum channelSemidefinite programmingArticle