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Exceptional points of any order in a single, lossy waveguide beam splitter by photon-numberresolved detection

Photonics Research 2019年第8期7卷 862-867页

作者： MARIO AQUIROZ-JUAREZ ARMANDO PEREZ-LEIJA KONRAD TSCHERNIG blas mrodriguez-lara OMAR SMAGANA-LOAIZA KURT BUSCH YOGESH NJOGLEKAR ROBERTO DE JLEON-MONTIEL Instituto de Ciencias Nucleares Universidad Nacional Autonoma de MexicoApartado Postal70-54304510Cd.Mx.Mexico Max-Born-Institut Max-Born-StraBe2A12489BerlinGermany Humboldt-Universitat zu Berlin Institut fur PhysikAG Theoretische Optik & PhotonikD-12489BerlinGermany Tecnologico de Monterrey Escuela de Ingenieria y CienciasAve.Eugenio Garza Sada250164849MonterreyN.L.Mexico Instituto Nacional de Astrofisica optica y ElectronicaCalle Luis Enrique Erro No.1Sta.Ma.TonantzintlaPue.CP72840Mexico Department of Physics and Astronomy Louisiana State UniversityBaton RougeLouisiana70803USA Department of Physics Indiana University Purdue University Indianapolis(IUPUI)IndianapolisIndiana46202USA

Exceptional points(EPs) are degeneracies of non-Hermitian operators where, in addition to the eigenvalues, the corresponding eigenmodes become degenerate. Classical and quantum photonic systems with EPs have attracted tremendous attention due to their unusual properties, topological features, and an enhanced sensitivity that depends on the order of the EP, i.e., the number of degenerate eigenmodes. Yet, experimentally engineering higher-order EPs in classical or quantum domains remain an open challenge due to the stringent symmetry constraints that are required for the coalescence of multiple eigenmodes. Here, we analytically show that the number-resolved dynamics of a single, lossy waveguide beam splitter, excited by N indistinguishable photons and post-selected to the N-photon subspace, will exhibit an EP of order N+1. By using the well-established mapping between a beam splitter Hamiltonian and the perfect state transfer model in the photon-number space,we analytically obtain the time evolution of a general N-photon state and numerically simulate the system’s evolution in the post-selected manifold. Our results pave the way toward realizing robust, arbitrary-order EPs on demand in a single device.

关键词： EP Exceptional points photon-numberresolved detection

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Architecture as device:Estrangement theory from literature to architecture

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Frontiers of Architectural Research 2022年第1期11卷 1-12页

作者： Qirui Wan Sergio Martín blas Department of Architectural Design ETSAMUniversidad Politécnica de MadridMadrid28040Spain

What is the estrangement of architecture?The concept has been incessantly mentioned by academics while there seems to be a lack of discussion systematically sorting out the significance,influence,and origins of estrangement asanarchitectural *** aims to discern the meaning of estrangement from the beginning and its process of entering the field of *** first part is expected to answer the following questions:what is estrangement’s original meaning in the field of literature and its variantions?The second part determines what estrangement is in architecture and in what form estrangement is represented according to these *** third part points out the difference during this translation fromliterature to architecture and demonstrates the reasonable inference thatmay actually compose the possibleway of applying the estranging technique in architecture.

关键词： Estrangement Architectural strategy Literature concept Decontextualization Anthropopathic architecture

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Comment on "Vortex of Fluid Field as Viewed from Curvature" [Commun. Theor. Phys. 43 (2005) 604]

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Communications in Theoretical Physics 2010年第1期53卷 43-44页

作者： blas Herrera Gerard Fortuny Departament d'Enginyeria Informàtica i Matemàtiques Universitat Rovira i Virgili

这里，我们做评价到纸的结论：刘世达，史绍英，刘世适，等，从弯曲看了的液体地的旋涡“[Commun。Theor。Phys。43 (2005 ) 604 ] 。

关键词：内聚力曲率流场涡

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Invasive strategy in elderly patients with acute coronary syndrome in 2018: close to the truth?

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Journal of Geriatric Cardiology 2019年第2期16卷 114-120页

作者： Sergio García-blas Clara Bonanad Juan Sanchis Servei de Cardiologia Hospital Clínic Universitari de València INCLIVA Universitat de ValènciaCIBERCV

Elderly population constitutes an increasingly larger proportion of patients admitted for acute coronary syndromes(ACS).The optimal management of ACS in these patients is still a challenge due to their clinical peculiarities and the paucity of specific data,and they have been traditionally managed more conservatively mainly based on subjective *** ST^segment elevation acute myocardial infarction urgent reperfusion is the standard of care and there is no upper age *** non-ST segment elevation acute myocardial infarction evidence is controversial,incomplete and mainly focused on chronological *** a strict conservative strategy should be avoided,routine invasive strategy may reduce the occurrence of myocardial infarction and need for revascularization at follow-up with no established benefit in terms of *** characteristics associated with aging,such as comorbidities and frailty,further discriminate patient's risk beyond *** is scarce,but it suggests that these features may modulate the benefit of invasive strategy in this *** trials should clarify the optimal management of ACS based on these parameters.

关键词： Acute coronary syndromes Comorbidity Frailty Percutaneous coronary intervention The elderly

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Validation of user-friendly models predicting extracapsular extension in prostate cancer patients

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Asian Journal of Urology 2023年第1期10卷 81-88页

作者： Leandro blas Masaki Shiota Shohei Nagakawa Shigehiro Tsukahara Takashi Matsumoto Ken Lee Keisuke Monji Eiji Kashiwagi Junichi Inokuchi Masatoshi Eto Department of Urology Graduate School of Medical SciencesKyushu UniversityFukuokaJapan

Objective:There are many models to predict extracapsular extension(ECE)in patients with prostate *** aimed to externally validate several models in a Japanese ***:We included patients treated with robotic-assisted radical prostatectomy for prostate *** risk of ECE was calculated for each patient in several models(prostate side-specific and non-side-specific).Model performance was assessed by calculating the receiver operating curve and the area under the curve(AUC),calibration plots,and decision curve ***:We identified ECE in 117(32.9%)of the 356 prostate lobes *** with ECE had a statistically significant higher prostate-specific antigen level,percentage of positive digital rectal examination,percentage of hypoechoic nodes,percentage of magnetic resonance imaging nodes or ECE suggestion,percentage of biopsy positive cores,International Society of Urological Pathology grade group,and percentage of core *** the sidespecific models,the Soeterik,Patel,Sayyid,Martini,and Steuber models presented AUC of 0.81,0.78,0.77,0.75,and 0.73,*** the non-side-specific models,the memorial Sloan Kettering Cancer Center web calculator,the Roach formula,the Partin tables of 2016,2013,and 2007 presented AUC of 0.74,0.72,0.64,0.61,and 0.60,***,the 95%confidence interval for most of these models *** side-specific models presented adequate *** the decision curve analyses,most models showed net benefit,but it overlapped among ***:Models predicting ECE were externally validated in Japanese *** side-specific models predicted better than the non-side-specific *** Soeterik and Patel models were the most accurate performing models.

关键词： Prognosis Prostate cancer Nomogram Extracapsular extension

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Distortion-stabilized ordered structures in A_(2)BB’O_(7) mixed pyrochlores

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npj Computational Materials 2019年第1期5卷 1076-1084页

作者： Ghanshyam Pilania Brian Puchala blas P.Uberuaga Materials Science and Technology Division Los Alamos National LaboratoryLos AlamosNM 87545USA Materials Science and Engineering Department University of MichiganAnn ArborMI 48109USA

Pyrochlore oxides(A2B2O7)are interesting for a number of technological applications,including radiation damage tolerance and as ionic *** pyrochlores—containing two A and/or two B site cations—provide even more flexibility for tailoring properties owing to the diverse chemical and configurational degrees of freedom accessible within this chemical ***,we examine relative stability of different cation orderings in one model double pyrochlore Gd2(Zr_(x)Ti_(1−x))_(2)O_(7),as a function of Zr content *** results show that,in the presence of some very specific local cation arrangements,certain cation-ordered compositions in this system are highly stabilized as a result of large oxygen relaxation displacements,leading to the formation of an ordered‘double’pyrochlore *** origins of these anomalous oxygen relaxations are traced back to both the local cation symmetry and a strong chemical preference of Zr atoms towards adopting a 7-fold coordination environment,as opposed to a 6-fold coordination available in a regular pyrochlore ***,we examine the stability of this type of ordering in 131 other pyrochlore *** of our findings are discussed in relation to the observed composition-dependent ionic conductivity in these systems and connections with previously reported experimental findings are made.

关键词： structure ordered stabilized

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Polarization conversion using customized subwavelength laser-induced periodic surface structures on stainless steel

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Photonics Research 2022年第9期10卷 2024-2031页

作者： MAHMOUD H.ELSHORBAGY LUIS MIGUEL SÁNCHEZ-BREA JERÓNIMO BUENCUERPO JESÚS DEL HOYO ÁNGELA SORIA-GARCÍA VERÓNICA PASTOR-VILLARRUBIA ALEJANDRO SAN-blas AINARA RODRÍGUEZ SANTIAGO MIGUEL OLAIZOLA JAVIER ALDA Grupo Complutense deÓptica Aplicada Departamento deÓpticaFacultad de Ciencias FıÂsicasUniversidad Complutense de MadridPlaza de las Ciencias S.N.28040 MadridSpain Physics Department Faculty of ScienceMinia University61519 El-MinyaEgypt L’Institut Photovoltaïque d’Île-de-France(IPVF) 18 Bd Thomas Gobert91120 PalaiseauFrance Ceit-Basque Research and Technology Alliance(BRTA) Manuel Lardizabal 1520018 Donostia/San SebastiánSpain Universidad de Navarra TecnunManuel Lardizabal 1320018 Donostia/San SebastiánSpain

Stainless steel is a basic raw material used in many *** can be customized by generating laser-induced periodic surface structure(LIPSS)as subwavelength ***,we present the capabilities of an LIPSS on stainless steel to modify the polarization state of the reflected radiation at the IR *** structures have been modeled using the finite element method and fabricated by femtosecond laser *** Stokes parameters have been obtained experimentally and a model for the shape has been used to fit the simulated Stokes values to the experimental *** birefringence of the LIPSS is analyzed to explain how they modify the polarization state of the incoming *** find the geometry of the subwavelength grating that makes it work as an optical retarder that transforms a linearly polarized light into a circularly polarized *** addition,the geometrical parameters of the LIPSS are tuned to selectively absorb one of the components of the incoming light,becoming a linear axial *** selecting the geometrical parameters and orientation of the fabricated LIPSS makes it possible to obtain an arbitrary pure polarization state when illuminated by a pure linearly polarized state oriented at an azimuth of 45°.The overall reflectance of these transformations reaches values close to 60%with respect to the incident intensity,which is the same reflectivity obtained for non-nanostructured stainless steel flat surfaces.

关键词： steel laser polarization

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The coppice-with-standards silvicultural system as applied to Eucalyptus plantations-a review

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Journal of Forestry Research 2014年第2期25卷 237-248页

作者： Antonio Carlos FERRAZ FILHO José Roberto Soares SCOLFORO blas MOLA-YUDEGO Departamento de Ciências Florestais Universidade Federal de Lavras (UFLA) School of Forest Sciences University of Eastern Finland (UEF)

We review the management of Eucalyptus species under a coppice-with-standards （CWS） silvicultural system. CWS management results in product diversification, permitting production of small and large scale timber from the same stand. Eucalyptus species are suitable candidates for CWS management because： there are large worldwide plantation areas, sprouting capacity is high, and eucalypts are multipur- pose species. We discuss （1） short rotation Eucalyptus coppice manage- ment for energy and pulping and （2） Eucalyptus seedling management for solid wood products. We review the literature and discuss experi- ences with Eucalyptus managed under the CWS system. We also assess projects dealing with Eucalyptus coppice management, stand density regulation, pruning, and stand and wood quality. The growth environ- ment of the standard trees （heavy competition up to the first harvest, free growth afterwards） coupled with long rotations （〉20 years） results in high quality logs for solid wood products. Early pruning should be ap- plied to enhance wood quality. We propose a system for the silvicultural management of Eucalyptus under the CWS system, elaborating on the consequences of initial planting density, site productivity, and standard tree densities as well as timing of basic silvicultural applications.

关键词： stand density regulation coppice management pruning silvicultural system stand production diversification CWS

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Ischemic stroke:complication of hypertension in hospital west of Almeria in Spain

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Family Medicine and Community Health 2013年第1期1卷 8-13页

作者： JV GOMEZ-GONZALEZ blas GIL-EXTREMERA Critical Care Unit and Emergency Department Poniente HospitalAlmeriaSpain Hypertension and Lipid Unit Service of Internal MedicineSan Cecilio University HospitalGranadaSpain

Objective:The aim of this paper was to analyse the etiologic,clinical,and therapeutic characteristics of the ischemic stroke in the comarca of Poniente,Almeria,***:An observational descriptive study was carried out from June 2005 to June 2006 in the Hospital of *** studied 243 patients admitted to Internal Medicine Department diag-nosed with ischemic *** revised the clinical histories of patients using social,demographic,clinical,diagnostic,and therapeutic variables.A descriptive analysis of the variables was performed using SPSS V10.1 ***:A total of 172 patients(70.7%)were admitted to *** time course of the stroke episode was less than 6 hours(40.6%);mean age of patients 73 years(50% males);94% were autochthonous workers,6% immigrants,72% hypertensive,and 35% had a history of previous *** most common symptom was dysarthria(59%);brain CAT scan was performed in all of them within 6 hours after stroke onset,and antiplatelet drugs were given within 48 hours after stroke *** 30% of the patients received early rehabilitation,12% died within the first ***:We found clinical and epidemiologic characteristics similar to those reported in the literature;we found a lower incidence of CVD and a higher time course than the national average.

关键词： Hypertension Stroke Symptoms Risk factors

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Dynamic assessment of variations in pupil diameter using swept‑source anterior segment optical coherence tomography after phakic collamer lens implantation

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Eye and Vision 2021年第6期8卷 396-403页

作者： Felix Gonzalez‑Lopez Carmen Bouza‑Miguens Victor Tejerina Vasyl Druchkiv blas Mompean Julio Ortega‑Usobiaga Rafael Bilbao‑Calabuig Department of Refractive Surgery Clinica BavieraMelchor Fernández Almagro928029 MadridSpain Department of Research and Development Clinica BavieraValenciaSpain

Purpose:To dynamically assess variations in pupil diameter induced by changes in brightness in myopic eyes implanted with an implantable collamer lens(ICL,STAAR Surgical)with a central ***:This prospective,observational single-center case series study comprised 65 eyes from 65 consecutive patients undergoing ICL implant.A modified commercially available swept-source Fourier-domain anterior segment optical coherence tomography(AS-OCT)device was used for imaging and performing dynamic pupillometry under changing light conditions before and after a mean follow-up interval of four months after ***:Preoperative mean pupil size under photopic conditions was 3.38±0.64 mm;after surgery,this increased to 3.48±0.61 *** pupil size under scotopic light conditions was 5.72±0.79 mm before surgery and 5.84±0.77 mm *** differences between preoperative and postoperative pupil diameter in miosis and mydriasis were 0.10±0.44 mm(P=0.078)and 0.12±0.58 mm(P=0.098),*** scotopic pupil exceeded the optic zone of the implanted lens in 39 eyes(60%).The mean central vault value was 412±177μm under maximum miosis and 506±190μm under maximum *** found a positive correlation between vault and differences in pupil diameter under all light conditions(P<0.05).Conclusion:Dynamic AS-OCT enables a very precise determination of the pupillary diameter in the iris *** changes in the pupil diameter under different light conditions after the implantation of an ICL are related to the postoperative vault.

关键词： Phakic collamer lens ICL Pupil OCT Central hole Central port Posterior chamber phakic lens

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