Quantum resources can improve communication complexity problems (CCPs) beyond their classical constraints. One quantum approach is to share entanglement and create correlations violating a Bell inequality, which can then assist classical communication. A second approach is to resort solely to the preparation, transmission and measurement of a single quantum system; in other words quantum communication. Here, we show the advantages of the latter over the former in high-dimensional Hilbert space. We focus on a family of CCPs, based on facet Bell inequalities, study the advantage of high-dimensional quantum communication, and realise such quantum communication strategies using up to ten-dimensional systems. The experiment demonstrates, for growing dimension, an increasing advantage over quantum strategies based on Bell inequality violation. For sufficiently high dimensions, quantum communication also surpasses the limitations of the post-quantum Bell correlations obeying only locality in the macroscopic limit. Surprisingly, we find that the advantages are tied to the use of measurements that are not rank-one projective. We provide an experimental semi-device-independent falsification of such measurements in Hilbert space dimension six.Introduction.-Communication complexity problems (CCPs) are tasks in which distant parties hold local data, the collection of which is needed for a computation of their interest. To make the computation possible, the parties communicate with each other. However, the amount of communication is limited and therefore not all data can be sent. The CCP consist in parties adopting an efficient communication strategy which allows them to perform the desired computation with a probability as high as possible. Efficient use of quantitatively limited communication is a broadly relevant matter [1], which provides fundamental insights on physical limitations [2,3].The ability to process information depends on the choice of the physical system into which the information is encoded [4]. Consequently, quantum entities without a classical counterpart can be regarded as tools for quantum information processing. The most famous example is entanglement. In a quantum CCP, parties may share an entangled state on which they perform local measurements, generating strongly correlated data which violates a Bell inequality. That data can then be used to assist a classical communication strategy [5]. In fact, Bell inequalities have been systematically linked to CCPs [6-8], and their violation enables better-than-classical communication efficiencies [7][8][9][10][11][12][13][14][15].Nevertheless, quantum theory presents also a second approach to CCPs: substituting classical communication with quantum communication. The justification for such a substitution relies on the Holevo theorem [16] which implies that no more information can be extracted from quantum d-level system than from a classical d-level system. Hence, in a quantum communication strategy, information is encoded in a quantum state of a specified Hilbe...

No abstract

El propósito de esta investigación es proporcionar nueva evidencia histórica que permita comparar el estándar de vida de los trabajadores de la Gran Minería del Cobre con el de otros sectores de la industria nacional (como textiles, alimentos, papel o cemento). Para esto, se ha elaborado un welfare ratio. Los resultados obtenidos fueron los siguientes: los ingresos de los trabajadores de la Gran Minería del Cobre eran comparativamente más altos que los del resto de los trabajadores manufactureros, pero no tan altos como la historiografía frecuentemente asume; durante la década de 1940 se experimenta un proceso de convergencia entre los ingresos de los trabajadores del cobre y de la manufactura; este proceso de convergencia finaliza durante la década de los cincuenta.

El des-financiamiento de las políticas sociales, el Banco Central como prestamista del fisco y el fracaso del modelo desarrollista (Chile, 1932-1955) The de-financing of the social policies, the central bank as a lender of the State and the failure of the developer model (Chile, 1932(Chile, -1955 Mauricio Casanova  RESUMENEl presente artículo analiza las consecuencias inesperadas del financiamiento de las políticas ISI en Chile: el des-financiamiento de las políticas sociales, la necesidad de recurrir a los créditos del Banco Central para evitar el déficit fiscal y el resurgimiento de un grave proceso inflacionario. Las conclusiones de esta investigación sugieren que las principales aproximaciones historiográficas sobre este periodo (basadas en una supuesta relación entre el aumento del estándar de vida y el proceso de industrialización) necesitan ser repensadas. ABSTRACTIn this article, the unexpected consequences of the financing of ISI policies in Chile: the under-financing of social policies, the need to resort the credits of the Central Bank to avoid fiscal deficit, and the resurgence of an acute inflationary cycle are analyzed. The conclusions of this research suggest that the main historiographical approaches on this period (based on an alleged relations between the increase on living standard and the industrialization process) need a radical rethink. IntroducciónEn los últimos años, la relación entre industrialización y estándar de vida ha estado en el centro de un intenso debate historiográfico. La renovación del clásico debate en torno a los orígenes de la gran divergencia entre occidente y el resto del mundo, que ha causado alto impacto en la  Magíster en Filosofía por la

No abstract