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Mostrando ítems 1-10 de 18
Artículo
Self-testing of a single quantum system from theory to experiment
(Nature Research, 2023-10-19)
Self-testing allows one to characterise quantum systems under minimal assumptions. However, existing schemes rely on quantum nonlocality and cannot be applied to systems that are not entangled. Here, we introduce a robust ...
Artículo
A comparison of 210Pbxs, 137Cs, and Pu isotopes as proxies of soil redistribution in South Spain under severe erosion conditions
(Springer, 2023-06-01)
Purpose The use of fallout radionuclides as proxies for the study of soil redistribution processes in semiarid environments of Southern Spain has been restricted to 137Cs. The potential and limitations of alternative ...
Artículo
Device-independent tests of structures of measurement incompatibility
(American Physical Society, 2019-10-31)
In contrast with classical physics, in quantum physics some sets of measurements are incompatible in the sense that they cannot be performed simultaneously. Among other applications, incompatibility allows for contextuality ...
Artículo
Irreducible magic sets for n-Qubit systems
(Physical Review Letters, 2022-11-07)
Magic sets of observables are minimal structures that capture quantum state-independent advantage for systems of n ≥ 2 qubits and are, therefore, fundamental tools for investigating the interface between classical and ...
Artículo
General Bayesian theories and the emergence of the exclusivity principle
(American Physical Society, 2020-10-05)
We address the problem of reconstructing quantum theory from the perspective of an agent who makes bets about the outcomes of possible experiments. We build a general Bayesian framework that can be used to organize the ...
Artículo
Loophole-free Bell tests with randomly chosen subsets of measurement settings
(American Physical Society, 2024-02-06)
There are bipartite quantum nonlocal correlations requiring very low detection efficiency to reach the loophole-free regime but that need too many measurement settings to be practical for actual experiments. This leads to ...
Artículo
The quantum maxima for the basic graphs of exclusivity are not reachable in Bell scenarios
(The Royal Society, 2024)
A necessary condition for the probabilities of a set of events to exhibit Bell nonlocality or Kochen-Specker contextuality is that the graph of exclusivity of the events contains induced odd cycles with five or more vertices, ...
Artículo
Chiral spin channels in curved graphene pn junctions
(American Physical Society, 2023-09-20)
We show that the chiral modes in circular graphene pn junctions provide an advantage for spin manipulation via spin-orbit coupling compared to semiconductor platforms. We derive the effective Hamiltonian for the spin ...
Artículo
Quantum correlations from simple assumptions
(American Physical Society, 2019-09-24)
We address the problem of deriving the set of quantum correlations for every Bell and Kochen-Specker (KS) contextuality scenario from simple assumptions. We show that the correlations that are possible according to quantum ...
Artículo
Quantum network approach to spin interferometry driven by Abelian and non-Abelian fields
(2021-04-21)
We present a theory of conducting quantum networks that accounts for Abelian and non-Abelian fields acting on spin carriers. We apply this approach to model the conductance of mesoscopic spin interferometers of different ...