1.4k citations · 11.5k across the 204 of their papers we have counts for
Showing 2004 · quant-phShow all
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quant-ph2004★ 779 cited
Negativity of the Wigner function as an indicator of nonclassicality
Anatole Kenfack, Karol Zyczkowski
A measure of nonclassicality of quantum states based on the volume of the negative part of the Wigner function is proposed. We analyze this quantity for Fock states, squeezed displ…
quant-ph2004★ 143 cited
Statistical properties of random density matrices
Hans-Juergen Sommers, Karol Zyczkowski
Statistical properties of ensembles of random density matrices are investigated. We compute traces and von Neumann entropies averaged over ensembles of random density matrices dist…
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…