• Corpus ID: 252567834

Reconstructing the whole from its parts

@inproceedings{Contreras2022ReconstructingTW,
  title={Reconstructing the whole from its parts},
  author={Daniel Uzc'ategui Contreras and Dardo Goyeneche},
  year={2022}
}
The quantum marginal problem consists in deciding whether a given set of marginal reductions is compatible with the existence of a global quantum state or not. In this work, we formulate the problem from the perspective of dynamical systems theory and study its advantages with respect to the standard approach. The introduced formalism allows us to analytically determine global quantum states from a wide class of self-consistent marginal reductions in any multipartite scenario. In particular, we… 
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Refuting spectral compatibility of quantum marginals

. The spectral variant of the quantum marginal problem asks: Given prescribed spectra for a set of quantum marginals, does there exist a compatible joint state? The main idea of this work is a

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