23 citations · 76 across the 10 of their papers we have counts for
Showing quant-phShow all
3 papers · 1 filter
quant-ph2026
Randomized simulation of quantum channels using small ancilla
Marcin Kotowski, Michał Kotowski
We study the problem of implementing a quantum channel using a small ancilla with classical randomization and postselection on an output failure flag. The simulation is probabilist…
quant-ph2025★ 1 cited
Pretty-good simulation of all quantum measurements by projective measurements
Michał Kotowski, Michał Oszmaniec
In quantum theory general measurements are described by so-called Positive Operator-Valued Measures (POVMs). We show that in -dimensional quantum systems an application of depol…
quant-ph2010★ 18 cited
Universal nonlinear entanglement witnesses
Marcin Kotowski, Michal Kotowski, Marek Kus
We give a universal recipe for constructing nonlinear entanglement witnesses able to detect non-classical correlations in arbitrary systems of distinguishable and/or identical part…