R
Rafael Chaves
Researcher at Federal University of Rio Grande do Norte
Publications - 125
Citations - 3629
Rafael Chaves is an academic researcher from Federal University of Rio Grande do Norte. The author has contributed to research in topics: Quantum nonlocality & Quantum entanglement. The author has an hindex of 30, co-authored 113 publications receiving 2847 citations. Previous affiliations of Rafael Chaves include Federal University of Rio de Janeiro & University of Cologne.
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Local orthogonality as a multipartite principle for quantum correlations.
Tobias Fritz,Ana Belén Sainz,Remigiusz Augusiak,J. Bohr Brask,Rafael Chaves,Anthony Leverrier,Anthony Leverrier,Antonio Acín +7 more
TL;DR: Local orthogonality, an intrinsically multipartite principle stating that events involving different outcomes of the same local measurement must be exclusive or orthogonal, is introduced and it is proved that it is equivalent to no-signalling in the bipartite scenario but more restrictive for more than two parties.
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Scaling Laws for the Decay of Multiqubit Entanglement
TL;DR: It is shown that the decay of multiparticle GHZ states can generate bound entangled states, and scaling laws for the Decay of entanglement and for its finite-time extinction are derived for different types of reservoirs.
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Noisy Metrology beyond the Standard Quantum Limit
TL;DR: It is shown that precision can be significantly enhanced when the noise is concentrated along some spatial direction, while the Hamiltonian governing the evolution which depends on the parameter to be estimated can be engineered to point along a different direction.
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Information-theoretic implications of quantum causal structures.
TL;DR: A general algorithm for computing information-theoretic constraints on the correlations that can arise from a given causal structure, where it allows for quantum systems as well as classical random variables.
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Polynomial Bell Inequalities.
TL;DR: This work provides a new, general, and conceptually clear method for the derivation of polynomial Bell inequalities in a wide class of scenarios, and shows how the construction can be used to allow for relaxations of causal constraints and naturally gives rise to a notion of nonsignaling in generalized Bell networks.