389 citations · 2.4k across the 57 of their papers we have counts for
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Optimal witnessing of the quantum Fisher information with few measurements
Iagoba Apellaniz, Matthias Kleinmann, Otfried Gühne +1
We show how to verify the metrological usefulness of quantum states based on the expectation values of an arbitrarily chosen set of observables. In particular, we estimate the quan…
Analysing multiparticle quantum states
Otfried Gühne, Matthias Kleinmann, Tobias Moroder
The analysis of multiparticle quantum states is a central problem in quantum information processing. This task poses several challenges for experimenters and theoreticians. We give…
Quantum correlations are stronger than all nonsignaling correlations produced by n-outcome measurements
Matthias Kleinmann, Adan Cabello
We show that, for any n, there are m-outcome quantum correlations, with m>n, which are stronger than any nonsignaling correlation produced from selecting among n-outcome measuremen…
Necessary and sufficient condition for quantum state-independent contextuality
Adan Cabello, Matthias Kleinmann, Costantino Budroni
We solve the problem of whether a set of quantum tests reveals state-independent contextuality and use this result to identify the simplest set of the minimal dimension. We also sh…