Buscar
Mostrando ítems 31-40 de 80
Artículo
Las medidas ideales y el problema de entender la mecánica cuántica
(Real Sociedad Española de Física, 2021)
Uno de los problemas más antiguos de la física moderna es de dónde viene la mecánica cuántica. La observación de la importancia que tienen en Física las cantidades conservadas y los observables que se pueden medir repetidamente ...
Artículo
Two qubits of a W state violate Bell's inequality beyond Cirel'son's bound
(American Physical Society, 2002-10)
It is shown that the correlations between two qubits selected from a trio prepared in a W state violate the Clauser-Horne-Shimony-Holt inequality more than the correlations between two qubits in any quantum state. Such a ...
Artículo
Experimental test of quantum correlations from Platonic graphs
(Optica Publishing Group, 2018-05-29)
Great effort has been made in the investigation of contextual correlations between compatible observables due to their both fundamental and practical importance. The graph-theoretic approach to correlate events has been ...
Artículo
Graph-theoretic approach for self-testing in Bell scenarios
(American Physical Society, 2022-09-26)
Self-testing is a technology to certify states and measurements using only the statistics of the experiment. Self-testing is possible if some extremal points in the set BQ of quantum correlations for a Bell experiment are ...
Artículo
Entanglement in eight-qubit graph states
(Elsevier, 2009)
Any 8-qubit graph state belongs to one of the 101 equivalence classes under local unitary operations within the Clifford group. For each of these classes we obtain a representative which requires the minimum number of ...
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 test based on local precertification of photon’s presence
(American Physical Society, 2012-06-11)
A loophole-free violation of Bell inequalities is of fundamental importance for demonstrating quantum nonlocality and long-distance device-independent secure communication. However, transmission losses represent a fundamental ...
Artículo
Experimental fully contextual correlations
(American Physical Society, 2012)
Quantum correlations are contextual yet, in general, nothing prevents the existence of even more contextual correlations. We identify and test a noncontextuality inequality in which the quantum violation cannot be improved ...
Artículo
Experimental certification of sustained entanglement and nonlocality after sequential measurements
(American Physical Society, 2020-04)
Entanglement is a fundamental resource for quantum information science. However, bipartite entanglement is destroyed when one particle is observed via projective (sharp) measurements, as is typically the case in most ...
Artículo
Multigraph approach to quantum non-locality
(IOP Publishing, 2014-10-08)
Non-contextuality (NC) and Bell inequalities can be expressed as bounds Ω for positive linear combinations S of probabilities of events, S≤Ω. Exclusive events in S can be represented as adjacent vertices of a graph called ...