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73rd World Foundry Congress: Creative Foundry, WFC 2018

作者： Grudzień, Malgorzata Nowak, Rafal Pirowski, Zenon Cygan, Rafal Rakoczy, Lukasz Foundry Research Institute Zakopianska 73 Str. Krakow30-418 Poland Consolidated Precision Products Hetmanska 120 Str. Rzeszow35-078 Poland AGH University of Science and Technology Faculty of Metals Engineering and Industrial Computer Science Mickiewicza 30 Av. Krakow30-059 Poland

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Optimization of circuits for IBM's five-qubit quantum computers

arXiv

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arXiv 2018年

作者： Dueck, Gerhard W. Pathak, Anirban Rahman, Md Mazder Shukla, Abhishek Banerjee, Anindita Faculty of Computer Science University of New Brunswick Canada Department of Physics and Material Science Engineering Jaypee Institute of Information Technology Noida India

IBM has made several quantum computers available to researchers around the world via cloud services. Two architectures with five qubits, one with 16, and one with 20 qubits are available to run experiments. The IBM architectures implement gates from the Clifford+T gate library. However, each architecture only implements a subset of the possible CNOT gates. In this paper, we show how Clifford+T circuits can efficiently be mapped into the two IBM quantum computers with 5 qubits. We further present an algorithm and a set of circuit identities that may be used to optimize the Clifford+T circuits in terms of gate count and number of levels. It is further shown that the optimized circuits can considerably reduce the gate count and number of levels and thus produce results with better fidelity. Copyright © 2018, The Authors. All rights reserved.

关键词： Timing circuits

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Characterization of primary microstructure of thin-walled Ni-based superalloy casting

Characterization of primary microstructure of thin-walled Ni...

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73rd World Foundry Congress: Creative Foundry, WFC 2018

作者： Grudzień, Malgorzata Pirowski, Zenon Jaśkowiec, Krzysztof Bitka, Adam Cygan, Rafal Rakoczy, Lukasz Foundry Research Institute Zakopianska 73 Str. Krakow30-418 Poland Consolidated Precision Products Hetmanska 120 Str. Rzeszow35-078 Poland AGH University of Science and Technology Faculty of Metals Engineering and Industrial Computer Science Mickiewicza 30 Av. Krakow30-059 Poland

ISBN: (纸本)9788390430638

In this paper the influence of selected investment casting parameters on the microstructure of Inconel 713C nickel-based superalloy have been investigated. The temperature inside the shell mould was precisely measured during the investment casting of thin-walled elements. The primary microstructure was characterized by relatively large local inhomogeneities inside interdendritic spaces relative to dendrite cores. As a consequence of alloying elements segregation during solidification, constituents like eutectic γ/γ' islands, phases rich in molybdenum, zirconium, and niobium were observed. The main goal of the research was to show the correlation between selected investment casting parameters and the primary microstructure of nickel-based superalloy. © 73rd World Foundry Congress "Creative Foundry", WFC 2018 - *** Rights Reserved.

关键词： Investment casting

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Role of system size in freeze-out conditions extracted from transverse momentum spectra of hadrons

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Physical Review C 2018年第6期98卷 064902-064902页

作者： Ajay Kumar Dash Ranbir Singh Sandeep Chatterjee Chitrasen Jena Bedangadas Mohanty School of Physical Sciences National Institute of Science Education and Research HBNI Jatni 752050 India AGH University of Science and Technology Faculty of Physics and Applied Computer Science al. Mickiewicza 30 30-059 Krakow Poland and Department of Physical Sciences Indian Institute of Science Education and Research Berhampur Transit Campus Government ITI Berhampur 760010 Odisha India Indian Institute of Science Education and Research Tirupati 517507 India

The data on hadron transverse momentum spectra in different centrality classes of p + Pb collisions at sNN=5.02 TeV have been analyzed to extract the freeze-out hypersurface within a simultaneous chemical and kinetic freeze-out scenario. The freeze-out hypersurface has been extracted for three freeze-out schemes that differ in the way strangeness is treated: (i) unified freeze-out for all hadrons at complete thermal equilibrium (1FO), (ii) unified freeze-out for all hadrons with an additional parameter γS which accounts for possible out-of-equilibrium production of strangeness (1FO+γS), and (iii) separate freeze-out for hadrons with and without strangeness content (2FO). Unlike in heavy-ion collisions where 2FO performs best in describing the mean hadron yields as well as the transverse momentum spectra, with p + Pb we find that 1FO+γS with one fewer parameter than 2FO performs better. This confirms expectations based on previous analysis of system size dependence in the freeze-out scheme with mean hadron yields: while heavy-ion collisions that are dominated by constituent interactions prefer 2FO, smaller collision systems like proton + nucleus and proton + proton collisions with lesser constituent interaction prefer a unified freeze-out scheme with varying degrees of strangeness equilibration.

关键词： Hydrodynamic models Particle & resonance production Relativistic heavy-ion collisions Thermal & statistical models

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Hydrothermal synthesis of photo-induced hydrophilic ZnO nanorods

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Materials Today: Proceedings 2018年第6期5卷 14121-14125页

作者： P. Khamkhom S. Pokai C. Chananonnawathorn M. Horprathum P. Eiamchai V. Pattantsetakul S. Limwichean N. Nuntawong P. Limnonthakul J. Kaewkhao Program of Physics Faculty of Science Buriram Rajabhat University Buriram 31000 Thailand Department of Physics Faculty of Science Srinakharinwirot University Bangkok 10110 Thailand National Electronics and Computer Technology Center National Science and Technology Development Agency Pathum Thani 12120 Thailand Center of Excellence in Glass Technology and Materials Science (CEGM) Nakhon Pathom Rajabhat University Nakhon Pathom 73000 Thailand

Zinc oxide nanorods have been synthesized on ZnO seed layer/glass substrate by hydrothermal at a low temperature of 90 °C using zinc acetate and hexamethylenetramine. The effect of precursor concentration/growth time on structural, physical morphologie characteristics were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and transmission electron microscope (TEM). The contact angle measurement was used to determine the hydrophilicity of the films after exposing to UV light. The XRD results show that the structure of ZnO nanorods is wurtzite structure. The growth rate of ZnO nanorods was depended on the growth time. From the contact angle measurement, the hydrophilicity of the ZnO nanorods tended to improve as the length and diameter of ZnO nanorods increased.

关键词： ZnO nanorods Hydrothermal Hydrophilc

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Encoding classical information into quantum resources

arXiv

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arXiv 2019年

作者： Korzekwa, Kamil Puchala, Zbigniew Tomamichel, Marco Zyczkowski, Karol International Centre for Theory of Quantum Technologies University of Gdansk Gdańsk80-308 Poland Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Kraków30-348 Poland Institute of Theoretical and Applied Informatics Polish Academy of Sciences Gliwice44-100 Poland Centre for Quantum Technologies National University of Singapore Singapore117543 Singapore Department of Electrical and Computer Engineering National University of Singapore Singapore117583 Singapore Centre for Quantum Software and Information School of Software University of Technology Sydney SydneyNSW2007 Australia Center for Theoretical Physics Polish Academy of Sciences Warszawa02-668 Poland

We introduce and analyse the problem of encoding classical information into different resources of a quantum state. More precisely, we consider a general class of communication scenarios characterised by encoding operations that commute with a unique resource destroying map and leave free states invariant. Our motivating example is given by encoding information into coherences of a quantum system with respect to a fixed basis (with unitaries diagonal in that basis as encodings and the decoherence channel as a resource destroying map), but the generality of the framework allows us to explore applications ranging from super-dense coding to thermodynamics. For any state, we find that the number of messages that can be encoded into it using such operations in a one-shot scenario is upper bounded in terms of the information spectrum relative entropy between the given state and its version with erased resources. Furthermore, if the resource destroying map is the twirling channel over some unitary group, we find matching one-shot lower bounds as well. In the asymptotic setting where we encode into many copies of the resource state, our bounds yield an operational interpretation of resource monotones such as the relative entropy of coherence and its corresponding relative entropy variance. Copyright © 2019, The Authors. All rights reserved.

关键词： Quantum optics

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Deep Learning Algorithms-based Object Detection and Localization Revisited

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Journal of physics: Conference Series 2021年第1期1892卷

作者： Safa Riyadh Waheed Norhaida Mohd Suaib Mohd Shafry Mohd Rahim Myasar Mundher Adnan A. A. Salim Big Data Center & Faculty of Engineering School of Computing Universiti Teknologi Malaysia 81310 Johor Bahru Malaysia Computer Techniques Engineering Department Faculty of Information Technology Imam Jaafar Al-Sadiq University Baghdad Iraq UTM-IRDA Digital Media Institute of Human-Centred Engineering Universiti Teknologi Malaysia 81310 Johor Bahru Malaysia Islamic University Najaf Iraq Laser Center & Physics Department Faculty of Science Universiti Teknologi Malaysia 81310 Johor Bahru Malaysia

The computer vision (CV) is an emerging area with sundry promises. This communication encompasses the past development, recent trends and future directions of the CV in the context of deep learning (DL) algorithms-based object detections and localizations techniques. To identify the object location inside an image and recognize it by a computer program as fast as the human brain the machine learning and DL techniques have been evolved. However, the main limitations of the machine are related to the prolonged time consumption to handle vast amount of data to perform the same task as the human brain. To overcome these shortcomings, the convolution neural networks (NNs)-based deep NN has been developed, which detects and classifies the object with high precision. To train the deep NNs, massive amount of data (in the form of images and videos) and time is needed, making the computational cost of the CV very high. Thus, transfer learning techniques have been proposed wherein a model trained on one task can be reused on another linked task, thereby producing excellent outcomes. In this spirit, diverse DL-based algorithms have been introduced to detect and classify the object. These algorithms include the region-based convolutional NN (R-CNN), fast R-CNN, Faster R-CNN, mask E-CNN and You Only Look Once. A comparative evaluation among these techniques has been made to reveal their merits and demerits in the CV.

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The complexity of homeomorphism relations on some classes of compacta

arXiv

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arXiv 2018年

作者： Krupski, Pawe l Vejnar, Benjamin Department of Computer Science Faculty of Fundamental Problems of Technology Wroc law University of Science and Technology Wroc law Department of Mathematical Analysis Faculty of Mathematics and Physics Charles University Prague Czech Republic

We prove that the homeomorphism relation between compact spaces can be continuously reduced to the homeomorphism equivalence relation between absolute retracts which strengthens and simplifies recent results of Chang and Gao, and Ciésla. It follows then that the homeomorphism relation of absolute retracts is Borel bireducible with the universal orbit equivalence relation. We also prove that the homeomorphism relation between regular continua is classifiable by countable structures and hence it is Borel bireducible with the universal orbit equivalence relation of the permutation group on a countable set. On the other hand we prove that the homeomorphism relation between rim-finite metrizable compacta is not classifiable by countable structures. Copyright © 2018, The Authors. All rights reserved.

关键词： Equivalence classes

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Boson Peak and Fracton of Sodium Carboxymethyl Starch Detected by Terahertz Time-Domain and Low-Frequency Raman Spectroscopies 43

Boson Peak and Fracton of Sodium Carboxymethyl Starch Detect...

引用

43rd International Conference on Infrared Millimeter and Terahertz Waves, IRMMW-THz 2018

作者： Terao, Wakana Mori, Tatsuya Koiima, Seiji Kaczmarska, Karolina Grabowska, Beata Fujii, Yasuhiro Koreeda, Akitoshi Ko, Jae-Hyeon Division of Materials Science University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki305-8573 Japan Faculty of Foundry Engineering AGH-University of Science and Technology Reymonta 23 Krakow30059 Poland Department of Physical Sciences Ritsumeikan University 1-1-1 Noji-higashi Kusatsu Shiga525-8577 Japan Department of Physics Hallym University 1 Hallymdaehakgil Chuncheon Gangwondo24252 Korea Republic of

ISBN: (纸本)9781538638095

We performed terahertz time-domain spectroscopy and low-frequency Raman scattering on microwave-treated carboxymethyl starch (CMS-Na), to detect universal boson peak (BP) behavior in glassy materials and fracton which is expected to universally appear in polymer glass. The obtained spectral shape of BP plot a(v)/v2of the CMS-Na-slu, where a(v) is the absorption coefficient, is different from either starch or vitreous glucose of the previous study. It suggests that existence of the fracton in the CMS-Na-slu. © 2018 IEEE.

关键词： Terahertz spectroscopy

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Constraints on the KS0→μ+μ− Branching Fraction

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Physical Review Letters 2020年第23期125卷 231801-231801页

作者： R. Aaij C. Abellán Beteta T. Ackernley B. Adeva M. Adinolfi H. Afsharnia C. A. Aidala S. Aiola Z. Ajaltouni S. Akar P. Albicocco J. Albrecht F. Alessio M. Alexander A. Alfonso Albero G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr. S. Amato Y. Amhis L. An L. Anderlini G. Andreassi M. Andreotti F. Archilli J. Arnau Romeu A. Artamonov M. Artuso K. Arzymatov E. Aslanides M. Atzeni B. Audurier S. Bachmann J. J. Back S. Baker V. Balagura W. Baldini A. Baranov R. J. Barlow S. Barsuk W. Barter M. Bartolini F. Baryshnikov G. Bassi V. Batozskaya B. Batsukh A. Battig A. Bay M. Becker F. Bedeschi I. Bediaga A. Beiter L. J. Bel V. Belavin S. Belin N. Beliy V. Bellee K. Belous I. Belyaev G. Bencivenni E. Ben-Haim S. Benson S. Beranek A. Berezhnoy R. Bernet D. Berninghoff H. C. Bernstein C. Bertella E. Bertholet A. Bertolin C. Betancourt F. Betti M. O. Bettler Ia. Bezshyiko S. Bhasin J. Bhom M. S. Bieker S. Bifani P. Billoir A. Bizzeti M. Bjørn M. P. Blago T. Blake F. Blanc S. Blusk D. Bobulska V. Bocci O. Boente Garcia T. Boettcher A. Boldyrev A. Bondar N. Bondar S. Borghi M. Borisyak M. Borsato J. T. Borsuk T. J. V. Bowcock C. Bozzi M. J. Bradley S. Braun A. Brea Rodriguez M. Brodski J. Brodzicka A. Brossa Gonzalo D. Brundu E. Buchanan A. Büchler-Germann A. Buonaura C. Burr A. Bursche J. S. Butter J. Buytaert W. Byczynski S. Cadeddu H. Cai R. Calabrese L. Calero Diaz S. Cali R. Calladine M. Calvi M. Calvo Gomez A. Camboni P. Campana D. H. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti K. Carvalho Akiba A. Casais Vidal G. Casse M. Cattaneo G. Cavallero S. Celani R. Cenci J. Cerasoli M. G. Chapman M. Charles Ph. Charpentier G. Chatzikonstantinidis M. Chefdeville V. Chekalina C. Chen S. Chen A. Chernov S.-G. Chitic V. Chobanova M. Chrzaszcz A. Chubykin P. Ciambrone M. F. Cicala X. Cid Vidal G. Ciezarek F. Cindolo P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier J. L. Cobbledick V. Coco J. A. B. Coelho J. Cogan E. Cogneras L. Cojocariu P. Collins T. Colombo A. Comerma-Montells A. Contu N. Nikhef National Institute for Subatomic Physics Amsterdam Netherlands Physik-Institut Universität Zürich Zürich Switzerland Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Instituto Galego de Física de Altas Enerxías (IGFAE) Universidade de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France University of Michigan Ann Arbor USA (associated with Syracuse University Syracuse New York USA) INFN Sezione di Milano Milano Italy Los Alamos National Laboratory (LANL) Los Alamos USA INFN Laboratori Nazionali di Frascati Frascati Italy Fakultät Physik Technische Universität Dortmund Dortmund Germany European Organization for Nuclear Research (CERN) Geneva Switzerland School of Physics and Astronomy University of Glasgow Glasgow United Kingdom ICCUB Universitat de Barcelona Barcelona Spain Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI) Gatchina Russia Imperial College London London United Kingdom Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Université Paris-Saclay CNRS/IN2P3 IJCLab Orsay France INFN Sezione di Firenze Firenze Italy Institute of Physics Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland INFN Sezione di Ferrara Ferrara Italy Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI) Protvino Russia Protvino Russia Syracuse University Syracuse New York USA Yandex School of Data Analysis Moscow Russia INFN Sezione di Cagliari Monserrato Italy Department of Physics University of Warwick Coventry United Kingdom Department of Physics and Astronomy University of Manchester Manchester United Kingdom INFN Sezione di Genova Genova Italy INFN Sezione di Pisa Pi

A search for the decay KS0→μ+μ− is performed using proton-proton collision data, corresponding to an integrated luminosity of 5.6 fb−1 and collected with the LHCb experiment during 2016, 2017, and 2018 at a center-of-mass energy of 13 TeV. The observed signal yield is consistent with zero, yielding an upper limit of B(KS0→μ+μ−)<2.2×10−10 at 90% C.L.. The limit reduces to B(KS0→μ+μ−)<2.1×10−10 at 90% C.L. once combined with the result from data taken in 2011 and 2012.

关键词： Branching fraction Electroweak interaction Flavor changing neutral currents Leptonic, semileptonic & radiative decays Rare decays Kaons Strange quark

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