Shortcuts to adiabaticity in superconducting circuits for fast multi-partite state generation

Shortcuts to adiabaticity provides a flexible method to accelerate and improve a quantum control task beyond adiabatic criteria. Here we propose the reverse-engineering approach to design the longitudinal coupling between a set of qubits coupled to several field modes, for achieving a fast generation of multi-partite quantum gates in photonic or qubit-based architecture. We show that the enhancing generation time is at the nanosecond scale that does not scale with the number of system components. In addition, our protocol does not suffer noticeable detrimental effects due to the dissipative dynamics. Finally, the possible implementation is discussed with the state-of-the-art circuit quantum electrodynamics architecture.Comment: 11 pages, 8 figure

Usefulness of 24-hour ambulatory blood pressure monitoring in the cardiology outpatients of Clinica Internacional during the year 2019

Introduction: Hypertension or High Blood Pressure (HBP) is a highly prevalent condition in Peru; there are about 5.5 million people over the age of 15 who suffer from this disease. Due to this, it is considered a prevalent disease and at the same time a cardiovascular risk factor related to the appearance of ischemic heart disease, cerebrovascular disease and renal failure, etc. Thus generating an increase in morbidity and mortality in the population, and even greater in the one that suffers it. Objective: Describing the utility of 24-hour Ambulatory Blood Pressure Monitoring (ABPM) in daily cardiology practice and in the diagnosis and follow-up of patients with or suspected high blood pressure. Materials and methods: Descriptive, observational, retrospective study, in which the 24-hour ABPM of 1,675 patients from the cardiology outpatient clinic of Clínica Internacional-San Borja in Lima-Perú during 2019 we reanalyzed. Results: 1,675 records were included. The median age was 56 years. 49.13% (823) were women and 50.87% (852) were men. A de novo diagnosis was made in 293 (40.7%) patients. 382 (40.2%) patients with uncontrolled HBP were found and 1,040 (62.1%) were found with abnormal circadian patterns, with increased cardiovascular risk. Only 37.9% of the studies were normal in all parameters. Conclusions: The 24-hour ABPM proved to be a useful tool to identify newly diagnosed hypertensive patients and uncontrolled hypertensive patients by detecting nocturnal hypertension and abnormal circadian patterns; which are risk markers for cardiovascular morbidity and mortality.Introducción: La hipertensión arterial (HTA) es una condición de alta prevalencia en nuestro país, considerada una enfermedad y al mismo tiempo un factor de riesgo cardiovascular, relacionada con la aparición de cardiopatía isquémica, enfermedad cerebrovascular e insuficiencia renal, ocasionando una elevada morbi-mortalidad. Objetivo: Describir la utilidad del Monitoreo Ambulatorio de la Presión Arterial (MAPA) en la práctica cardiológica diaria, en el diagnóstico y seguimiento de los pacientes con hipertensión arterial o con sospecha de esta. Materiales y métodos: Estudio descriptivo, observacional, retrospectivo, en el que se analizaron los estudios de MAPA de 24 horas de 1675 pacientes de la consulta externa de Clínica Internacional, sede San Borja en Lima-Perú, de enero a diciembre del año 2019. Resultados: Se incluyeron 1675 registros. La mediana de edad fue 55.6 años. De estos, 823 (49.13%) pacientes fueron mujeres y 852 (50.87) fueron varones. Se logró hacer el diagnóstico de hipertensión arterial de novo en 293 (40.7%) pacientes. Se encontraron 382 (40.2%) pacientes con HTA no controlada y se encontraron 1040 (62.1%) con patrones circadianos anormales, relacionándose a mayor riesgo de eventos cardiovasculares. Solo el 37.9% de los estudios fueron normales en todos los parámetros. Conclusiones: El MAPA de 24 horas demostró ser una herramienta útil para identificar a los pacientes hipertensos de reciente diagnóstico y a los hipertensos no controlados, detectando hipertensión nocturna y patrones circadianos anormales, los cuales son marcadores de riesgo para morbilidad y mortalidad cardiovascular

Embedded Quantum Correlations in thermalized quantum Rabi systems

We study the quantum correlations embedded in open quantum Rabi systems. Specifically, we study how the quantum correlation depends on the coupling strength, number of qubits, and reservoir temperatures. We numerically calculate the quantum correlations of up to three qubits interacting with a single field mode. We find that the embedded quantum correlations exhibit a maximum for a given coupling strength, which depends inversely on the number of subsystems and the reservoir temperature. We explore how this feature affects the performance of a many-qubit Otto heat engine, finding numerical evidence of a direct correspondence between the minimum of the extractable work and the maximum of the embedded quantum correlations in the qubit-cavity bi-partition. Furthermore, as we increase the number of qubits, the maximum extractable work is reached at smaller values of the coupling strength. This work could help design more sophisticated quantum heat engines that rely on many-body systems with embedded correlations as working substances.Comment: 12 pages and 12 figure

Methodology for optimization of distributed biomass resources evaluation, management and final energy use

[EN] A methodology has been developed to assess optimal management and energy use of distributed biomass resources, where logistics is a main factor but other features must be also considered: biomass resources properties (quantity, quality, seasonality & availability), plant size effect, available technologies for power, heat and solid biofuels generation, CO2 emissions balance and quantification of potential biofuel consumers. This methodology provides a quantification and characterization of biomass resources, a list of optimal locations from logistic point of view and the necessary data to perform detailed technical, economic and environmental analysis of the different biomass energy use options. It has been applied to three districts of the Valencian region in Spain and main results and conclusions are also included in this paper.This work was completed in the framework of the activities of the biomass research group of the IIE (Instituto de Ingenieria Energetica) in regional, national and international. The authors deeply thank all the organizations involved in these projects for their support and, specially, IMPIVA-Generalitat Valenciana, the Spanish Ministry of Science and Technology and the European Commission for the projects BIOVAL, BIODER and EU-DEEP respectively, for the provided funding that made this work possible.Alfonso-Solar, D.; Perpiñá, C.; Pérez-Navarro, A.; Peñalvo-López, E.; Vargas-Salgado, C.; Cárdenas, R. (2009). Methodology for optimization of distributed biomass resources evaluation, management and final energy use. Biomass and Bioenergy. 33(8):1070-1079. https://doi.org/10.1016/j.biombioe.2009.04.0021070107933

Standardized Short-Term Acute Heat Stress Assays Resolve Historical Differences in Coral Thermotolerance Across Microhabitat Reef Sites

Coral bleaching is one of the main drivers of reef degradation. Most corals bleach and suffer mortality at just 1–2°C above their maximum monthly mean temperatures, but some species and genotypes resist or recover better than others. Here, we conducted a series of 18‐hr short‐term acute heat stress assays side‐by‐side with a 21‐day long‐term heat stress experiment to assess the ability of both approaches to resolve coral thermotolerance differences reflective of in situ reef temperature thresholds. Using a suite of physiological parameters (photosynthetic efficiency, coral whitening, chlorophyll a , host protein, algal symbiont counts, and algal type association), we assessed bleaching susceptibility of Stylophora pistillata colonies from the windward/exposed and leeward/protected sites of a nearshore coral reef in the central Red Sea, which had previously shown differential mortality during a natural bleaching event. Photosynthetic efficiency was most indicative of the expected higher thermal tolerance in corals from the protected reef site, denoted by an increased retention of dark‐adapted maximum quantum yields at higher temperatures. These differences were resolved using both experimental setups, as corroborated by a positive linear relationship, not observed for the other parameters. Notably, short‐term acute heat stress assays resolved per‐colony (genotype) differences that may have been masked by acclimation effects in the long‐term experiment. Using our newly developed portable experimental system termed the Coral Bleaching Automated Stress System (CBASS), we thus highlight the potential of mobile, standardized short‐term acute heat stress assays to resolve fine‐scale differences in coral thermotolerance. Accordingly, such a system may be suitable for large‐scale determination and complement existing approaches to identify resilient genotypes/reefs for downstream experimental examination and prioritization of reef sites for conservation/restoration. Development of such a framework is consistent with the recommendations of the National Academy of Sciences and the Reef Restoration and Adaptation Program committees for new intervention and restoration strategies

Dissociable Effects of Executive Load on Perceived Exertion and Emotional Valence during Submaximal Cycling

Endurance physical exercise is accompanied by subjective perceptions of exertion (reported perceived exertion, RPE), emotional valence, and arousal. These constructs have been hypothesized to serve as the basis for the exerciser to make decisions regarding when to stop, how to regulate pace, and whether or not to exercise again. In dual physical-cognitive tasks, the mental (executive) workload generated by the cognitive task has been shown to influence these perceptions, in ways that could also influence exercise-related decisions. In the present work, we intend to replicate and extend previous findings that manipulating the amount of executive load imposed by a mental task, performed concomitantly with a submaximal cycling session, influenced emotional states but not perceived exertion. Participants (experienced triathletes) were asked to perform a submaximal cycling task in two conditions with different executive demands (a two-back version of the n-back task vs. oddball) but equated in external physical load. Results showed that the higher executive load condition elicited more arousal and less positive valence than the lower load condition. However, both conditions did not differ in RPE. This experimental dissociation suggests that perceived exertion and its emotional correlates are not interchangeable, which opens the possibility that they could play different roles in exercise-related decision-making.Spanish Ministry of Economy and Competitiveness (Secretaria de Estado de Investigacion, Desarrollo e Innovacion; Convocatoria 2017 de Proyectos I + D, de Retos a la Sociedad; Spain) DEP2017-89879-RSpanish Government (Ministerio de Economia y Competitividad, Secretaria de Estado de Investigacion, Desarrollo e Innovacion; Convocatoria 2017 de Proyectos I + D de Excelencia, Spain - Fondo Europeo de Desarrollo Regional, FEDER, European Union) PSI2017-85488-