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- Radboud University NijmegenNL54 papers
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5 papers · 2 filters
Computing complexity measures for quantum states based on exponential families
Sönke Niekamp, Tobias Galla, Matthias Kleinmann +1
Given a multiparticle quantum state, one may ask whether it can be represented as a thermal state of some Hamiltonian with k-particle interactions only. The distance from the expon…
Estimating entanglement monotones with a generalization of the Wootters formula
Zhi-Hua Chen, Zhi-Hao Ma, Otfried Gühne +1
Entanglement monotones, such as the concurrence, are useful tools to characterize quantum correlations in various physical systems. The computation of the concurrence involves, how…
Permutationally invariant state reconstruction
Tobias Moroder, Philipp Hyllus, Geza Toth +5
Feasible tomography schemes for large particle numbers must possess, besides an appropriate data acquisition protocol, also an efficient way to reconstruct the density operator fro…
Typical local measurements in generalised probabilistic theories: emergence of quantum bipartite correlations
Matthias Kleinmann, Tobias J. Osborne, Volkher B. Scholz +1
What singles out quantum mechanics as the fundamental theory of Nature? Here we study local measurements in generalised probabilistic theories (GPTs) and investigate how observatio…
Algorithm for characterizing stochastic local operations and classical communication classes of multiparticle entanglement
Hermann Kampermann, Otfried Gühne, Colin Wilmott +1
It is well known that the classification of pure multiparticle entangled states according to stochastic local operations leads to a natural classification of mixed states in terms…