10 citations · 17 across the 3 of their papers we have counts for
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quant-ph2004★ 1 cited
Mutually Unbiased Bases and The Complementarity Polytope
Ingemar Bengtsson, Asa Ericsson
A complete set of N+1 mutually unbiased bases (MUBs) forms a convex polytope in the N^2-1 dimensional space of NxN Hermitian matrices of unit trace. As a geometrical object such a…
quant-ph2004★ 10 cited
The Importance of Being Unistochastic
Ingemar Bengtsson
A bistochastic matrix is a square matrix with positive entries such that rows and columns sum to unity. A unistochastic matrix is a bistochastic matrix whose matrix elements are th…
quant-ph2004★ 6 cited
On duality between quantum maps and quantum states
Karol Zyczkowski, Ingemar Bengtsson
We investigate the space of quantum operations, as well as the larger space of maps which are positive, but not completely positive. A constructive criterion for decomposability is…