Robust Hadamard Matrices, Unistochastic Rays in Birkhoff Polytope and Equi-Entangled Bases in Composite Spaces
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DOI: 10.1007/s11786-018-0384-y
Abstract: We study a special class of (real or complex) robust Hadamard matrices, distinguished by the property that their projection onto a 2-dimensional subspace forms a Hadamard matrix. It is shown that such a matrix of… read more here.
Keywords: robust hadamard; matrix; hadamard; birkhoff polytope ... See more keywords