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Sampling arbitrary photon-added or photon-subtracted squeezed states is in the same complexity class as boson sampling

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Physical Review A 2015年第2期91卷 022317-022317页

作者： Jonathan P. Olson Kaushik P. Seshadreesan Keith R. Motes Peter P. Rohde Jonathan P. Dowling Hearne Institute for Theoretical Physics and Department of Physics & Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA Australian Research Council Centre of Excellence for Engineered Quantum Systems Macquarie University Sydney NSW 2113 Australia Centre for Quantum Computation and Intelligent Systems (QCIS) Faculty of Engineering & Information Technology University of Technology Sydney NSW 2007 Australia Computational Science Research Center Beijing 100084 China

Boson sampling is a simple model for nonuniversal linear optics quantum computing using far fewer physical resources than universal schemes. An input state comprising vacuum and single-photon states is fed through a Haar-random linear optics network and sampled at the output by using coincidence photodetection. This problem is strongly believed to be classically hard to simulate. We show that an analogous procedure implements the same problem, using photon-added or -subtracted squeezed vacuum states (with arbitrary squeezing), where sampling at the output is performed via parity measurements. The equivalence is exact and independent of the squeezing parameter, and hence provides an entire class of quantum states of light in the same complexity class as boson sampling.

关键词： BOSONS PHOTONS SQUEEZED light QUANTUM states QUANTUM computing

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Publisher Correction: Multiancestry genome-wide association study of 520,000 subjects identifies 32 loci associated with stroke and stroke subtypes

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Nature genetics 2019年第7期51卷 1192-1193页

作者： Rainer Malik Ganesh Chauhan Matthew Traylor Muralidharan Sargurupremraj Yukinori Okada Aniket Mishra Loes Rutten-Jacobs Anne-Katrin Giese Sander W van der Laan Solveig Gretarsdottir Christopher D Anderson Michael Chong Hieab H H Adams Tetsuro Ago Peter Almgren Philippe Amouyel Hakan Ay Traci M Bartz Oscar R Benavente Steve Bevan Giorgio B Boncoraglio Robert D Brown Adam S Butterworth Caty Carrera Cara L Carty Daniel I Chasman Wei-Min Chen John W Cole Adolfo Correa Ioana Cotlarciuc Carlos Cruchaga John Danesh Paul I W de Bakker Anita L DeStefano Marcel den Hoed Qing Duan Stefan T Engelter Guido J Falcone Rebecca F Gottesman Raji P Grewal Vilmundur Gudnason Stefan Gustafsson Jeffrey Haessler Tamara B Harris Ahamad Hassan Aki S Havulinna Susan R Heckbert Elizabeth G Holliday George Howard Fang-Chi Hsu Hyacinth I Hyacinth M Arfan Ikram Erik Ingelsson Marguerite R Irvin Xueqiu Jian Jordi Jiménez-Conde Julie A Johnson J Wouter Jukema Masahiro Kanai Keith L Keene Brett M Kissela Dawn O Kleindorfer Charles Kooperberg Michiaki Kubo Leslie A Lange Carl D Langefeld Claudia Langenberg Lenore J Launer Jin-Moo Lee Robin Lemmens Didier Leys Cathryn M Lewis Wei-Yu Lin Arne G Lindgren Erik Lorentzen Patrik K Magnusson Jane Maguire Ani Manichaikul Patrick F McArdle James F Meschia Braxton D Mitchell Thomas H Mosley Michael A Nalls Toshiharu Ninomiya Martin J O'Donnell Bruce M Psaty Sara L Pulit Kristiina Rannikmäe Alexander P Reiner Kathryn M Rexrode Kenneth Rice Stephen S Rich Paul M Ridker Natalia S Rost Peter M Rothwell Jerome I Rotter Tatjana Rundek Ralph L Sacco Saori Sakaue Michele M Sale Veikko Salomaa Bishwa R Sapkota Reinhold Schmidt Carsten O Schmidt Ulf Schminke Pankaj Sharma Agnieszka Slowik Cathie L M Sudlow Christian Tanislav Turgut Tatlisumak Kent D Taylor Vincent N S Thijs Gudmar Thorleifsson Unnur Thorsteinsdottir Steffen Tiedt Stella Trompet Christophe Tzourio Cornelia M van Duijn Matthew Walters Nicholas J Wareham Sylvia Wassertheil-Smoller James G Wilson Kerri L Wiggins Qiong Yang Salim Yusuf Joshua C Bis Tomi Institute for Stroke and Dementia Research (ISD) University Hospital LMU Munich Munich Germany. Centre for Brain Research Indian Institute of Science Bangalore India. INSERM U1219 Bordeaux Population Health Research Center University of Bordeaux Bordeaux France. Stroke Research Group Division of Clinical Neurosciences University of Cambridge Cambridge UK. Department of Neurology Institute for Neurodegenerative Disease Bordeaux University Hospital Bordeaux France. Laboratory for Statistical Analysis RIKEN Center for Integrative Medical Sciences Yokohama Japan. Department of Statistical Genetics Osaka University Graduate School of Medicine Osaka Japan. Laboratory of Statistical Immunology Immunology Frontier Research Center (WPI-IFReC) Osaka University Suita Japan. Department of Neurology Massachusetts General Hospital (MGH) Harvard Medical School Boston MA USA. Laboratory of Experimental Cardiology Department of Cardiology Division of Heart and Lungs University Medical Center Utrecht University of Utrecht Utrecht the Netherlands. deCODE genetics/AMGEN Inc. Reykjavik Iceland. Center for Genomic Medicine MGH Boston MA USA. J. Philip Kistler Stroke Research Center Department of Neurology MGH Boston MA USA. Program in Medical and Population Genetics Broad Institute Cambridge MA USA. Population Health Research Institute McMaster University Hamilton Ontario Canada. Department of Epidemiology Erasmus University Medical Center Rotterdam the Netherlands. Department of Radiology and Nuclear Medicine Erasmus University Medical Center Rotterdam the Netherlands. Department of Medicine and Clinical Science Graduate School of Medical Sciences Kyushu University Fukuoka Japan. Department of Clinical Sciences Lund University Malmö Sweden. INSERM Institut Pasteur de Lille LabEx DISTALZ-UMR1167 Risk Factors and Molecular Determinants of Aging-Related Diseases Université Lille Lille France. Centre Hospitalier Université Lille Epidemiology and Public Health D

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

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Finger-Knuckle-Print Identification Based on Histogram of Oriented Gradients and SVM classifier

Finger-Knuckle-Print Identification Based on Histogram of Or...

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International Conference on New Technologies of Information and Communication

作者： Abdallah Meraoumia Maarouf Korichi Salim Chitroub Ahmed Bouridane Univ Ouargla Fac. des nouvelles technologies de l'information et de la communication Lab. de Genie Electrique Laboratory of Intelligent and Communication Systems Engineering (LISIC) Electronics and Computer Science Faculty USTHB Department of Computer Science and Digital Technologies North Umbria University Newcastle

ISBN: (纸本)9781467366861

Recently, a wide variety of applications require reliable personal recognition systems to either confirm or determine the identity of an individual requesting their services. So, a reliable identity recognition system is a critical part in these applications that render their services only to genuine users. Thus, biometrics is an emerging technology that utilizes distinct behavioral or physiological traits in order to determine or verify the identity of an individual. In this context, the present paper attempts to design an effectively biometric system by using Finger-Knuckle-Print (FKP) traits. In this study, the feature vector of each segmented FKP is extracted using Histogram of Oriented Gradients (HOG). In addition, a multi-class Support Vector Machine (SVM) based learning algorithm is used to train the system using the extracted features vectors. From the test results, using PolyU FKP database with 165 persons, it is evident that our scheme has higher identification rate and very less classification error compared to several existing methods.

关键词： Security Biometrics Identification FKP HOGSVM data fusion

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Multi-graphene cubic structure fabricated by nanomanipulation

Multi-graphene cubic structure fabricated by nanomanipulatio...

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IEEE Conference on Nanotechnology

作者： Takafumi Fujiwara Masahiro Nakajima Akihiko Ichikawa Kenichi Ohara Yasuhisa Hasegawa Toshio Fukuda Faculty of Science and Engineering Meijo University Nagoya Japan Center For Micro-Nano Mechatronics Nagoya University Nagoya Japan Department of Micro-Nano Systems Engineering Nagoya University Nagoya Japan Institute for Advanced Research Nagoya University Beijing China Intelligent Robotics Institute Beijing Institute of Technology Beijing China

ISBN: (纸本)9781467381574

Muhi-graphene cubic structure was fabricated by a nanomanipulation system. Two nanomanipulators were coordinately used with three degrees of freedoms to handle two end-effectors respectively. A cubic net was designed and fabricated using a multi graphene by a FIB (Focused Ion Beam) etching. A tungsten probe was also reformed by the FIB etching to adjust the size of cubic net design for bending manipulation. The each surface of cubic net was bent to form a cubic 3D structure. In this study, the bending stress of multi graphene were also measured using a silicon cantilever to reveal the elastic or plastic deformation regions by bending manipulation.

关键词： Decision support systems Graphene Conferences Nanostructures Three-dimensional displays Assembly

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Learning multiple linear mappings for efficient single image super-resolution

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IEEE Transactions on Image Processing 2015年第3期24卷 846-861页

作者： Zhang, Kaibing Tao, Dacheng Gao, Xinbo Li, Xuelong Xiong, Zenggang State Key Laboratory of Integrated Services Networks School of Electronic Engineering Xidian University Xi'an710071 China School of Computer and Information Science Hubei Engineering University Xiaogan432000 China Centre for Quantum Computation and Intelligent Systems Faculty of Engineering and Information Technology University of Technology SydneyNSW2007 Australia State Key Laboratory of Transient Optics and Photonics Chinese Academy of Sciences Xi'an710119 China

Example learning-based superresolution (SR) algorithms show promise for restoring a high-resolution (HR) image from a single low-resolution (LR) input. The most popular approaches, however, are either time-or space-intensive, which limits their practical applications in many resource-limited settings. In this paper, we propose a novel computationally efficient single image SR method that learns multiple linear mappings (MLM) to directly transform LR feature subspaces into HR subspaces. In particular, we first partition the large nonlinear feature space of LR images into a cluster of linear subspaces. Multiple LR subdictionaries are then learned, followed by inferring the corresponding HR subdictionaries based on the assumption that the LR-HR features share the same representation coefficients. We establish MLM from the input LR features to the desired HR outputs in order to achieve fast yet stable SR recovery. Furthermore, in order to suppress displeasing artifacts generated by the MLM-based method, we apply a fast nonlocal means algorithm to construct a simple yet effective similarity-based regularization term for SR enhancement. Experimental results indicate that our approach is both quantitatively and qualitatively superior to other application-oriented SR methods, while maintaining relatively low time and space complexity. © 1992-2012 IEEE.

关键词： Mathematical transformations

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Multiscale quantum simulation of quantum field theory using wavelets

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Physical Review A 2015年第3期92卷 032315-032315页

作者： Gavin K. Brennen Peter Rohde Barry C. Sanders Sukhwinder Singh Centre for Engineered Quantum Systems Department of Physics and Astronomy Macquarie University North Ryde NSW 2109 Australia Centre for Quantum Computation and Intelligent Systems (QCIS) Faculty of Engineering and Information Technology University of Technology Sydney NSW 2007 Australia Institute for Quantum Science and Technology University of Calgary Alberta Canada T2N 1N4 Program in Quantum Information Science Canadian Institute for Advanced Research Toronto Ontario M5G 1Z8 Canada

A successful approach to understand field theories is to resolve the physics into different length or energy scales using the renormalization group framework. We propose a quantum simulation of quantum field theory which encodes field degrees of freedom in a wavelet basis—a multiscale description of the theory. Since wavelet families can be constructed to have compact support at all resolutions, this encoding allows for quantum simulations to create particle excitations which are local at some chosen scale and provides a natural way to associate observables in the theory to finite-resolution detectors.

关键词： QUANTUM field theory WAVELETS (Mathematics) RENORMALIZATION group RENORMALIZATION (Physics) QUASIPARTICLES (Physics)

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Aqueous imaging by SEM-CT system inside environmental-SEM

Aqueous imaging by SEM-CT system inside environmental-SEM

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IEEE Conference on Nanotechnology

作者： Masahiro Nakajima Masaru Takeuchi Kouya Shimazaki Naoki Hisamoto Yasuhisa Hasegawa Toshio Fukuda Qiang Huang Center For Micro-nano Mechatronics Nagoya University Nagoya Japan Department of Micro-Nano Systems Engineering Nagoya University Nagoya Japan Division of Biological Science Nagoya University Nagoya Japan Institute for Advanced Research Nagoya University Nagoya Japan Faculty of Science and Engineering Meijo University Nagoya Japan Intelligent Robotics Institute Beijing Institute of Technology Beijing China

ISBN: (纸本)9781467381574

This paper presents the aqueous observation of three-dimensional internal information using scanning election microscope-computed tomography (SEM-CT) inside an environmental-SEM (E-SEM). For this purpose, it is required to control the sample temperature by controlling sample chamber pressure of the E-SEM. In this paper, a cooling system was installed into the SEM-CT system to decrease the sample temperature. The aqueous observation was confirmed by the E-SEM and SEM-CT observations using sodium polyacrylate particles as a sample.

关键词： Three-dimensional displays Water resources Bridges Substrates Conferences Nanotechnology Microscopy

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Passive PT-symmetric couplers without complex optical potentials

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Physical Review A 2015年第5期92卷 053815-053815页

作者： Yi-Chan Lee Jibing Liu You-Lin Chuang Min-Hsiu Hsieh Ray-Kuang Lee Physics Department National Tsing-Hua University Hsinchu 300 Taiwan Institute of Photonics Technologies National Tsing-Hua University Hsinchu 300 Taiwan College of Physics and Electronic Science Hubei Normal University Huangshi 435002 China Centre for Quantum Computation and Intelligent Systems Faculty of Engineering and Information Technology University of Technology Sydney New South Wales 2007 Australia Physics Division National Center for Theoretical Science Hsinchu 300 Taiwan

In addition to the implementation of parity-time–(PT-) symmetric optical systems by carefully and actively controlling the gain and loss, we show that a 2×2 PT-symmetric Hamiltonian has a unitarily equivalent representation without complex optical potentials in the resulting optical coupler. Through the Naimark dilation in operator algebra, passive PT-symmetric couplers can thus be implemented with a refractive index of real values and asymmetric coupling coefficients. This opens up the possibility to implement general PT-symmetric systems with state-of-the-art asymmetric slab waveguides, dissimilar optical fibers, or cavities with chiral mirrors.

关键词： RESEARCH Operator algebras Optical couplers Nuclear optical potentials Optical waveguides Hamiltonian mechanics

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Empirical evaluation of software development effort estimation based on upper phase development activity

Computer Software

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Computer Software 2014年第2期31卷 129-143页

作者： Tsunoda, Masateru Toda, Koji Fushida, Kyohei Kamei, Yasutaka Ubayashi, Naoyasu Dept. of Informatics Kinki University Japan Dept. of Information and Systems Engineering Fukuoka Institute of Technology Japan Research and Development Headquarters NTT DATA Corporation Japan Graduate School Faculty of Information Science and Electrical Engineering Kyushu University Japan

We focus on effort estimation based on the effort for early phase activities, and built effort estimation models using early phase effort as an explanatory variable, and compared the estimation accuracies of these models to the effort estimation models based on software size. In addition, we built estimation models using both early phase effort and software size. In our experiment, we used ISBSG dataset, which was collected from software development companies, and regarded planning phase effort and requirement analysis effort as early phase effort. The result of the experiment showed that when both software size and sum of planning and requirement analysis phase effort were used as explanatory variables, the estimation accuracy was most improved (Average Balanced Relative Error was improved to 75.4% from 148.4%).

关键词： Software design

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Survival microinjection into C. elegans with in vivo observation based on micromanipulation

Survival microinjection into C. elegans with in vivo observa...

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IEEE/RSJ International Conference on intelligent Robots and systems

作者： M. Nakajima Y. Ayamura M. Takeuchi N. Hisamoto S. Pastuhov Y. Hasegawa T. Fukuda Qiang Huang Department of Micro-Nano Systems Engineering Nagoya University Nagoya Aichi Japan Division of Biological Science Graduate School of Science Nagoya University Nagoya Aichi Japan Institute for Advanced Research Nagoya University Nagoya Aichi Japan Faculty of Science and Engineering Meijo University Nagoya Aichi Japan Intelligent Robotics Institute Beijing Institute of Technology China Center For Micro-nano Mechatronics Nagoya University Nagoya Aichi Japan

This study presents the survival microinjection into Caenorhabditis elegans (C. elegans) with in vivo observation based on micromanipulation. The microinjections were achieved with micro-gel beads which are enable to encapsulate chemicals for injection. In this study, a fluorescent material was used to evaluate the injection positional precision inside the C. elegans. The fluorescent microbead was picked up at the tip of a micropipette injection tool and injected by a piezo actuated microinjector. The distance between the injected micro-gel bead and closest nerve axon was measured as 20.3 μm and 16.5 μm by in vivo observation of a confocal microscopy. The two types of pipette tools were used to evaluate the success and survival rates of microinjection, and the smaller pipette (pipette A, 0.8 μm in diameter) showed higher rates as 50 % and 67 % respectively.

关键词： intelligent robots

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