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Realization of the first sub-shot-noise wide field microscope

Light(Science & Applications) 2017年第1期6卷 737-743页

作者： Nigam Samantaray Ivano Ruo-Berchera alice meda Marco Genovese INRIM Strada delle Cacce 91I-10135 TorinoItaly Politecnico di Torino Corso Duca degli Abruzzi24I-10129 TorinoItaly INFN Via P.Giuria 1I-10125 TorinoItaly

Recently,several proof of principle experiments have demonstrated the advantages of quantum technologies over classical *** present challenge is to surpass the limits of proof of principle demonstrations to approach real *** letter presents such an achievement in the field of quantum enhanced *** particular,we describe the realization of a sub-shot-noise wide field microscope based on spatially multi-mode non-classical photon number correlations in twin *** microscope produces realtime images of 8000 pixels at full resolution,for a 500μm2 field of view,with noise reduced to 80%of the shot noise level(for each pixel),which is suitable for absorption imaging of complex *** fast post-elaboration,specifically applying a quantum enhanced median filter,the noise can be further reduced(to o30%of the shot noise level)by setting a trade-off with the resolution,thus achieving the best sensitivity per incident photon reported in absorption microscopy.

关键词： imaging microscopy parametric down conversion sub-shot-noise

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Quantifying backflash radiation to prevent zero-error attacks in quantum key distribution

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Light(Science & Applications) 2016年第1期5卷 28-32页

作者： alice meda Ivo Pietro Degiovanni Alberto Tosi Zhiliang Yuan Giorgio Brida Marco Genovese INRIM 10135 TorinoItaly Dipartimento di Elettronica Informazione e BioingegneriaPolitecnico di Milano20133 MilanoItaly Toshiba Research Europe Ltd Cambridge CB40GZUK

Single-photon avalanche diodes(SPADs)are the most widespread commercial solution for single-photon counting in quantum key distribution ***,the secondary photon emission that arises from the avalanche of charge carriers that occurs during the detection of a photon may be exploited by an eavesdropper to gain information without inducing errors in the transmission *** this paper,we characterize such backflash light in gated InGaAs/InP SPADs and discuss its spectral and temporal characterization for different detector models and different operating *** qualitatively bound the maximum information leakage due to backflash light and propose solutions for preventing such leakage.

关键词： backflash quantum key distribution single-photon avalanche diode zero-error attack

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坐标测量系统的几何误差补偿(英文)

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纳米技术与精密工程 2006年第2期4卷 83-91页

作者： Alessandro Balsamo alice meda 意大利国家计量研究院

坐标测量系统(CMSs)的软件补偿由于能以很低的价格,显著地改善系统性能而获得广泛的应用．即使对于已经建立了完善模型方程的坐标测量系统,仍然存在与其相适配的确定模型参数的过程是否最佳的问题．在更差的情况下,模型方程尚未建立,需... 详细信息

坐标测量系统(CMSs)的软件补偿由于能以很低的价格,显著地改善系统性能而获得广泛的应用．即使对于已经建立了完善模型方程的坐标测量系统,仍然存在与其相适配的确定模型参数的过程是否最佳的问题．在更差的情况下,模型方程尚未建立,需要从建模到试验的全部实践．文中从补偿过程的角度讨论这一问题,确定了需要遵循的一系列步骤．对于每一步骤,指出了相关的问题,并提出建议．讨论了两种在性质和数学描述上有很大差别的坐标测量系统．

关键词：误差补偿坐标测量系统模型模型参数

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Prevention of Mother-to-Child Transmission of Hepatitis B in the Urban District Health Baskuy Burkina Faso

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Open Journal of Gastroenterology 2016年第6期6卷 175-187页

作者： alice Nanelin Guingané Nicolas meda Roger Sombié Christiane Béré/Somé Lydie Sia Rose Ido/Da Issa Guiraud Alain Bougouma Service d’Hépatogastroentérologie CHU-Yalgado Ouédraogo Ouagadougou Burkina Faso Aix Marseille University IRD UMR-S912 Marseille France Faculty of Health Sciences (UFR-SDS) University of Ouaga I Pr Joseph Ki-Zerbo Ouagadougou Burkina Faso Centre MURAZ Bobo-Dioulasso Burkina Faso Institute of Research on Health Sciences Ouagadougou Burkina Faso

Few studies have been conducted on the epidemiology in pregnancy in sub-Saharan Africa. This study aimed to improve the care of pregnant women infected with hepatitis B virus (VHB) and their newborns in the urban district health. Method: This study was conducted from 01/09/2014 to 01/09/2015. Study involved three types of data collection: a collection of data from health facilities involved in the project;repeated cross-sectional survey among health personnel;a pros- pective study of pregnant women identified positive for HBsAg and followed at the University Hospital Yalgado Ouédraogo (CHU-YO). Knowledge assessment was made among health staff and pregnant women using a knowledge score. Construction of the score came after a factorial analysis of multiple correspondences on population health workers surveyed in the first round (N = 119) on one hand and all pregnant women (N = 266) on the other hand. This had identified among the 79/19 questions, those that discriminated best knowledge of paramedics and pregnant women. For pregnant women, this score was then dichotomized from the center and logistic regression was performed to determine the sociodemographic, medical and obstetric characteristics that influenced it (p value < 005). Results: Health staff had been surveyed twice (N = 119/100). In general, the level of knowledge was good on targeted knowledge, both before and after training. No health worker routinely offered screening for hepatitis B among pregnant women attending antenatal clinics. Altogether 266 pregnant women HBsAg-positive were referred and followed CHU-YO. Half of the patients had a score lower than 2/17. Univariate analysis showed that variables such as education level influenced significantly the level of knowledge. Women with higher levels of education had a higher level of knowledge about the disease, compared to those of primary level [OR = 1.63;[1.34 to 1.99], p value < 0,001]. Newborns during the study period numbered 128 and the vaccine was

关键词： Hepatitis B Paramedics Knowledge Practices Pregnant Women Immunization Newborn

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