419 citations · 2.6k across the 40 of their papers we have counts for
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nlin.CD2001★ 73 cited
Random unistochastic matrices
K. Zyczkowski, W. Slomczynski, M. Kus +1
An ensemble of random unistochastic (orthostochastic) matrices is defined by taking squared moduli of elements of random unitary (orthogonal) matrices distributed according to the…
quant-ph2001★ 3 cited
Manifolds of interconvertible pure states
Magdalena M. Sinolecka, Karol Zyczkowski, Marek Kus
Local orbits of a pure state of an N x N bi-partite quantum system are analyzed. We compute their dimensions which depends on the degeneracy of the vector of coefficients arising b…
quant-ph2001★ 40 cited
Separable approximation for mixed states of composite quantum systems
Thomas Wellens, Marek Kus
We describe a purely algebraic method for finding the best separable approximation to a mixed state of a composite 2x2 quantum system, consisting of a decomposition of the state in…