95 citations · 171 across the 8 of their papers we have counts for
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nlin.SI2007★ 5 cited
Random Bistochastic Matrices
V. Cappellini, H. -J. Sommers, W. Bruzda +1
Ensembles of random stochastic and bistochastic matrices are investigated. While all columns of a random stochastic matrix can be chosen independently, the rows and columns of a bi…
quant-ph2007★ 10 cited
Subnormalized states and trace-nonincreasing maps
Valerio Cappellini, Hans-Juergen Sommers, Karol Zyczkowski
We investigate the set of completely positive, trace-nonincreasing linear maps acting on the set M_N of mixed quantum states of size N. Extremal point of this set of maps are chara…