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Artículo
Significant loophole-free test of Kochen-Specker contextuality using two species of atomic ions
(American Association for the Advancement of Science, 2022-02-09)
Quantum measurements cannot be thought of as revealing preexisting results, even when they do not disturb any other measurement in the same trial. This feature is called contextuality and is crucial for the quantum advantage ...
Artículo
Space QUEST mission proposal: experimentally testing decoherence due to gravity
(IOP Science, 2018-06-12)
Models of quantum systems on curved space-times lack sufficient experimental verification. Some speculative theories suggest that quantum correlations, such as entanglement, may exhibit different behavior to purely classical ...
Artículo
Introducción a la lógica cuántica
(Consejo Superior de Investigaciones Científicas, CSIC, 2000)
En este trabajo trataremos de responder las siguientes preguntas: 1. ¿Qué entendemos por «lógica» de una teoría física? 2. ¿Cuál es la lógica de la física clásica? 3. ¿Cómo se puede construir una lógica basada en la mecánica ...
Artículo
Quantum key distribution in the Holevo limit
(American Physical Society, 2000-12-25)
A theorem by Shannon and the Holevo theorem impose that the efficiency of any protocol for quantum key distribution, E , defined as the number of secret (i.e., allowing eavesdropping detection) bits per transmitted bit ...
Artículo
Basic exclusivity graphs in quantum correlations
(American Physical Society, 2013)
A fundamental problem is to understand why quantum theory only violates some noncontextuality (NC) inequalities and identify the physical principles that prevent higher-than-quantum violations. We prove that quantum ...
Artículo
Quantum nonlocality via local contextuality with qubit-qubit entanglement
(American Physical Society, 2016-04-28)
Quantum nonlocality can be revealed “via local contextuality” in qudit-qudit entangled systems with d > 2 , that is, through the violation of inequalities containing Alice-Bob correlations that admit a local description, ...
Artículo
All noncontextuality inequalities for the n -cycle scenario
(American Physical Society, 2013-08-21)
The problem of separating classical from quantum correlations is, in general, intractable and has been solved explicitly only in a few cases. In particular, known methods cannot provide general solutions for an arbitrary ...
Patente
Procedimiento cuantico para distribuir claves criptograficas sin descartar datos.
(Oficina Española de Patentes y Marcas , 2002-06-01)
El invento es un procedimiento para distribuir claves criptográficas entre dos usuarios distantes que usan una propiedad de la mecánica cuántica. La novedad de la invención reside en que el número de datos útiles para ...
Artículo
Artículo
Quantum clock synchronization with a single qudit
(Nature Research, 2015-01-23)
Clock synchronization for nonfaulty processes in multiprocess networks is indispensable for a variety of technologies. A reliable system must be able to resynchronize the nonfaulty processes upon some components failing ...