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- W2080931848 abstract "Applications in quantum information theory and quantum tomography have raised current interest in complex Hadamard matrices. In this note we investigate the connection between tiling of Abelian groups and constructions of complex Hadamard matrices. First, we recover a recent, very general construction of complex Hadamard matrices due to Dita [2] via a natural tiling construction. Then we find some necessary conditions for any given complex Hadamard matrix to be equivalent to a Dita-type matrix. Finally, using another tiling construction, due to Szabó [8], we arrive at new parametric families of complex Hadamard matrices of order 8, 12 and 16, and we use our necessary conditions to prove that these families do not arise with Dita's construction. These new families complement the recent catalogue [10] of complex Hadamard matrices of small order." @default.
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- W2080931848 date "2007-09-01" @default.
- W2080931848 modified "2023-10-14" @default.
- W2080931848 title "Constructions of Complex Hadamard Matrices via Tiling Abelian Groups" @default.
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- W2080931848 doi "https://doi.org/10.1007/s11080-007-9050-6" @default.
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