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arXiv 2018年

作者： Zhu, Huangjun Hayashi, Masahito Department of Physics and Center for Field Theory and Particle Physics Fudan University Shanghai200433 China State Key Laboratory of Surface Physics Fudan University Shanghai200433 China Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai200433 China Collaborative Innovation Center of Advanced Microstructures Nanjing210093 China Institute for Theoretical Physics University of Cologne Cologne50937 Germany Graduate School of Mathematics Nagoya University Nagoya464-8602 Japan Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China Centre for Quantum Technologies National University of Singapore 3 Science Drive 2 Singapore117542 Singapore

Bipartite and multipartite entangled states are of central interest in quantum information processing and foundational studies. Efficient verification of these states, especially in the adversarial scenario, is a key to various applications, such as blind measurement-based quantum computation and quantum networks. Here we offer a general recipe to constructing efficient verification protocols for the adversarial scenario from protocols devised for the nonadversarial scenario. With this recipe, arbitrary pure states can be verified in the adversarial scenario with almost the same efficiency as in the nonadversarial scenario. In addition, we propose a simple protocol for verifying hypergraph states which requires only two distinct Pauli measurements for each party, yet its efficiency is comparable to the best protocol based on entangling measurements. For a given state, the overhead is bounded by the chromatic number and degree of the underlying hypergraph. Our protocol is dramatically more efficient than all known candidates based on local measurements, including tomography and direct fidelity estimation. It enables the verification of hypergraph states and genuine multipartite entanglement of thousands of qubits even in the adversarial scenario. Copyright © 2018, The Authors. All rights reserved.

关键词： Quantum entanglement

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Shell structure of the neutron-rich isotopes Co69,71,73

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Physical Review C 2020年第3期101卷 034314-034314页

作者： T. Lokotko S. Leblond J. Lee P. Doornenbal A. Obertelli A. Poves F. Nowacki K. Ogata K. Yoshida G. Authelet H. Baba D. Calvet F. Château S. Chen A. Corsi A. Delbart J.-M. Gheller A. Gillibert T. Isobe V. Lapoux M. Matsushita S. Momiyama T. Motobayashi M. Niikura H. Otsu C. Péron A. Peyaud E. C. Pollacco J.-Y. Roussé H. Sakurai C. Santamaria Z. Y. Xu M. Sasano Y. Shiga S. Takeuchi R. Taniuchi T. Uesaka H. Wang V. Werner F. Browne L. X. Chung Zs. Dombradi S. Franchoo F. Giacoppo A. Gottardo K. Hadynska-Klek Z. Korkulu S. Koyama Y. Kubota M. Lettmann C. Louchart R. Lozeva K. Matsui T. Miyazaki S. Nishimura L. Olivier S. Ota Z. Patel E. Sahin C. Shand P.-A. Söderström I. Stefan D. Steppenbeck T. Sumikama D. Suzuki Zs. Vajta J. Wu Department of Physics The University of Hong Kong Pokfulam Hong Kong RIKEN Nishina Center 2-1 Hirosawa Wako Saitama 351-0198 Japan CEA Centre de Saclay IRFU/Service de Physique Nucléaire F-91191 Gif-sur-Yvette France Departmento de Fisica Teorica and IFT-UAM/CSIC Universidad Autónoma de Madrid Madrid Spain IPHC IN2P3/CNRS Université de Strasbourg 67037 Strasbourg France Research Center for Nuclear Physics (RCNP) Osaka University Ibaraki 567-0047 Japan Department of Physics Osaka City University Osaka 558-8585 Japan Advanced Science Research Center Japan Atomic Energy Agency Tokai Ibaraki 319-1195 Japan Center for Nuclear Study University of Tokyo RIKEN campus Wako Saitama 351-0198 Japan Department of Physics University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Department of Physics Rikkyo University 3-34-1 Nishi-Ikebukuro Toshima Tokyo 172-8501 Japan Institut für Kernphysik Technische Universität Darmstadt 64289 Darmstadt Germany School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4GJ United Kingdom Institute for Nuclear Science & Technology VINATOM P.O. Box 5T-160 Nghia Do Hanoi Vietnam MTA Atomki P.O. Box 51 Debrecen H-4001 Hungary Institut de Physique Nucléaire d'Orsay IN2P3-CNRS F-91406 Orsay Cedex France Department of Physics University of Oslo N-0316 Oslo Norway CSNSM IN2P3/CNRS Université Paris-Saclay 91405 Orsay Campus France Department of Physics University of Surrey Guildford GU2 7XH United Kingdom Department of Physics Tohoku University Sendai 980-8578 Japan State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 People's Republic of China

The structures of the neutron-rich Co69,71,73 isotopes were investigated via (p,2p) knockout reactions at the Radioactive Isotope Beam Factory, RIKEN. Isotopes of interest were studied using the DALI2 γ-ray detector array combined with the MINOS target and tracker system. Level schemes were reconstructed using the γ−γ coincidence technique, with tentative spin-parity assignments based on the measured inclusive and exclusive cross sections. Comparison with shell-model calculations using the Lenzi-Nowacki-Poves-Sieja LNPS and PFSDG-U interactions suggests coexistence of spherical and deformed shapes at low excitation energies in the Co69,71,73 isotopes. The distorted-wave impulse approximation (DWIA) framework was used to calculate the single-particle cross sections. These values were compared with the experimental findings.

关键词： Direct reactions Nuclear reactions Nuclear structure & decays Shell model 59 ≤ A ≤ 89 Radioactive beams

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Thread-aware adaptive prefetcher on multicore systems: Improving the performance for multithreaded workloads

Thread-aware adaptive prefetcher on multicore systems: Impro...

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作者： Liu, Peng Yu, Jiyang Huang, Michael C. College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi214125 China Department of Shannon Lab. Huawei Technologies Co. Ltd. Hangzhou310051 China Department of Electrical and Computer Engineering University of Rochester RochesterNY14627-0231 United States

Most processors employ hardware data prefetching techniques to hide memory access latencies. However, the prefetching requests from different threads on a multicore processor can cause severe interference with prefetching and/or demand requests of others. The data prefetching can lead to significant performance degradation due to shared resource contention on shared memory multicore systems. This article proposes a thread-aware data prefetching mechanism based on low-overhead runtime information to tune prefetching modes and aggressiveness, mitigating the resource contention in the memory system. Our solution has three new components: (1) a self-tuning prefetcher that uses runtime feedback to dynamically adjust data prefetching modes and arguments of each thread, (2) a filtering mechanism that informs the hardware about which prefetching request can cause shared data invalidation and should be discarded, and (3) a limiter thread acceleration mechanism to estimate and accelerate the critical thread which has the longest completion time in the parallel region of execution. On a set of multithreaded parallel benchmarks, our thread-aware data prefetchingmechanism improves the overall performance of 64-core system by 13% over a multimode prefetch baseline system with two-level cache organization and conventional modified, exclusive, shared, and invalid-based directory coherence *** compare our approach with the feedback directed prefetching technique and find that it provides 9% performance improvement on multicore systems, while saving the memory bandwidth consumption.

关键词： Benchmarking

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Sequential Nature of (p,3p) Two-Proton Knockout from Neutron-Rich Nuclei

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Physical Review Letters 2020年第1期125卷 012501-012501页

作者： A. Frotscher M. Gómez-Ramos A. Obertelli P. Doornenbal G. Authelet H. Baba D. Calvet F. Château S. Chen A. Corsi A. Delbart J.-M. Gheller A. Giganon A. Gillibert T. Isobe V. Lapoux M. Matsushita S. Momiyama T. Motobayashi M. Niikura H. Otsu N. Paul C. Péron A. Peyaud E. C. Pollacco J.-Y. Roussé H. Sakurai C. Santamaria M. Sasano Y. Shiga N. Shimizu D. Steppenbeck S. Takeuchi R. Taniuchi T. Uesaka H. Wang K. Yoneda T. Ando T. Arici A. Blazhev F. Browne A. M. Bruce R. Carroll L. X. Chung M. L. Cortés M. Dewald B. Ding Zs. Dombradi F. Flavigny S. Franchoo F. Giacoppo M. Górska A. Gottardo K. Hadyńska-Klęk Z. Korkulu S. Koyama Y. Kubota A. Jungclaus J. Lee M. Lettmann B. D. Linh J. Liu Z. Liu C. Lizarazo C. Louchart R. Lozeva K. Matsui T. Miyazaki K. Moschner S. Nagamine N. Nakatsuka C. Nita S. Nishimura C. R. Nobs L. Olivier S. Ota Z. Patel Zs. Podolyák M. Rudigier E. Sahin T. Y. Saito C. Shand P.-A. Söderström I. G. Stefan T. Sumikama D. Suzuki R. Orlandi V. Vaquero Zs. Vajta V. Werner K. Wimmer J. Wu Z. Xu Institut für Kernphysik Technische Universität Darmstadt D-64289 Darmstadt Germany IRFU CEA Université Paris-Saclay F-91191 Gif-sur-Yvette France RIKEN Nishina Center 2-1 Hirosawa Wako Saitama 351-0198 Japan School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 People’s Republic of China Center for Nuclear Study The University of Tokyo RIKEN campus Wako Saitama 351-0198 Japan Department of Physics The University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics Rikkyo University 3-34-1 Nishi-Ikebukuro Toshima Tokyo 172-8501 Japan Center for Nuclear Study The University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan GSI Helmholtzzentrum für Schwerionenforschung GmbH D-64291 Darmstadt Germany Justus-Liebig-Universität Giessen D-35392 Giessen Germany Institut für Kernphysik Universität zu Köln D-50937 Köln Germany School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4GJ United Kingdom Department of Physics University of Surrey Guildford GU2 7XH United Kingdom Institute for Nuclear Science & Technology VINATOM P.O. Box 5T-160 Nghia Do Hanoi Vietnam Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 People’s Republic of China MTA Atomki P.O. Box 51 Debrecen H-4001 Hungary Present affiliation: LPC Caen ENSICAEN Université de Caen CNRS/IN2P3 14050 Caen Cedex 04 France Department of Physics University of Oslo N-0316 Oslo Norway Instituto de Estructura de la Materia CSIC 28006 Madrid Spain Department of Physics The University of Hong Kong Pokfulam Hong Kong School of Nuclear Science and Technology University of Chinese Academy of Sciences Beijing 100049 China IPHC CNRS/IN2P3 Université de Strasbourg F-67037 Strasbourg France CSNSM CNRS/IN2P3 Université Paris-Sud F-91405 Orsay Campus France Department of Physics Faculty of Science Kyoto University Kyoto 606-8502 Japan Horia Hulubei National Institute of Physic

Twenty-one two-proton knockout (p,3p) cross sections were measured from neutron-rich nuclei at ∼250 MeV/nucleon in inverse kinematics. The angular distribution of the three emitted protons was determined for the first time, demonstrating that the (p,3p) kinematics are consistent with two sequential proton-proton collisions within the projectile nucleus. Ratios of (p,3p) over (p,2p) inclusive cross sections follow the trend of other many-nucleon removal reactions, further reinforcing the sequential nature of (p,3p) in neutron-rich nuclei.

关键词： Direct reactions Rare & new isotopes

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PACM: A Prediction-Based Auto-Adaptive Compression Model for HDFS

PACM: A Prediction-Based Auto-Adaptive Compression Model for...

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IEEE International Symposium on Parallel and Distributed Processing Workshops and Phd Forum (IPDPSW)

作者： Ruijian Wang Chao Wang Li Zha University of the Chinese Academy of Sciences Beijing China Institute of Computing Technology Chinese Academy of Sciences Beijing China State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi China

ISBN: (纸本)9781509036837

Nowadays the digital universe becomes larger and larger. The data created every year has been up to ZB level. How to store the data in many normal servers is a critical issue. Although a distributed file system alleviates the storage problem, there is still a need to reduce the storage and speed up transmission of largescale data. The distributed file system like HDFS already offers compression schemes to cater to the need, however, when the workload and data format change, configuring the compression with only one kind of algorithm is not always effective. In this paper, we proposed a model called PACM (Prediction-based Auto-adaptive Compression Model) to optimize the storage and performance by using different algorithms, e.g. quicklz, zlib, snappy according to variable data format and workload. We also implemented the model inHadoop and our empirical evaluation shows that by using PACM, the write throughput has been improved by 2-5 times.

关键词： Adaptation models Compression algorithms Data models Prediction algorithms Load modeling Predictive models Throughput

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Nuclear structure of Te isotopes beyond neutron magic number N=82

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Physical Review C 2021年第3期103卷 034320-034320页

作者： B. Moon A. Jungclaus H. Naïdja A. Gargano R. Lozeva C.-B. Moon A. Odahara G. S. Simpson S. Nishimura F. Browne P. Doornenbal G. Gey J. Keatings G. Lorusso Z. Patel S. Rice M. Si L. Sinclair P.-A. Söderström T. Sumikama J. Taprogge H. Watanabe J. Wu Z. Y. Xu A. Yagi D. S. Ahn H. Baba F. L. Bello Garrote S. Bönig R. Daido J. M. Daugas F. Didierjean F. Drouet Y. Fang N. Fukuda R. Gernhäuser B. Hong E. Ideguchi S. Ilieva N. Inabe T. Ishigaki T. Isobe H. S. Jung D. Kameda I. Kojouharov T. Komatsubara T. Kröll T. Kubo N. Kurz Y. K. Kwon C. S. Lee P. Lee Z. Li A. Montaner-Pizá S. Morimoto K. Moschner D. Mücher D. Murai M. Niikura H. Nishibata I. Nishizuka R. Orlandi H. Sakurai H. Schaffner Y. Shimizu K. Steiger H. Suzuki H. Takeda K. Tshoo Zs. Vajta A. Wendt R. Yokoyama K. Yoshinaga Center for Exotic Nuclear Studies Institute for Basic Science Daejeon 34126 Republic of Korea RIKEN Nishina Center Wako Saitama 351-0198 Japan Instituto de Estructura de la Materia CSIC E-28006 Madrid Spain Laboratoire de Physique Mathematique et Subatomique Constantine 1 University Constantine 25000 Algeria Istituto Nazionale di Fisica Nucleare Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy IPHC CNRS/IN2P3 and University of Strasbourg F-67037 Strasbourg Cedex 2 France Université Paris-Saclay IJCLab CNRS/IN2P3 F-91405 Orsay France Department of Physics Osaka University Osaka 560-0043 Japan LPSC Université Joseph Fourier Grenoble 1 CNRS/IN2P3 Institut National Polytechnique de Grenoble F-38026 Grenoble Cedex France School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4GJ United Kingdom Institut Laue-Langevin B.P. 156 F-38042 Grenoble Cedex 9 France School of Engineering University of the West of Scotland Paisley PA1 2BE United Kingdom Department of Physics University of Surrey Guildford GU2 7XH United Kingdom Department of Physics University of York Heslington York YO10 5DD United Kingdom Extreme Light Infrastructure-Nuclear Physics (ELI-NP) 077125 Bucharest-Măgurele Romania Departamento de Física Teórica Universidad Autónoma de Madrid E-28049 Madrid Spain School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China Department of Physics University of Tokyo Tokyo 113-0033 Japan Korea Basic Science Institute (KBSI) Daejeon 34133 Republic of Korea Department of Physics University of Oslo Oslo N-0316 Norway Institut für Kernphysik Technische Universität Darmstadt D-64289 Darmstadt Germany CEA DAM DIF F-91297 Arpajon Cedex France Physik Department E12 Technische Universität München D-85748 Garching Germany Department of Physics Korea University Seoul 02841 Republic of Korea Center for Extreme Nuclear Matters (CENuM) Korea University Seoul 0

Newly observed decay schemes of the nuclei Sb137 and Sb138 are reported. The neutron-rich Sb isotopes were produced by the in-flight fragmentation of a U238 primary beam with an energy of 345 MeV/nucleon. Several new excited states of Te137 with tentatively assigned spin-parities of (5/2−), (9/2−), and (7/2) have been established which play an important role in the evolution of neutron levels beyond N=82. The study of the β decay of Sb138 led to a considerable extension of the level scheme of Te138 including the identification of several nonyrast states. The structure of Te137 and Te138 is discussed on the basis of large-scale shell-model calculations performed using two different effective interactions.

关键词： Beta decay Nuclear structure & decays 90 ≤ A ≤ 149 Radiation detectors Radioactive beams Shell model Spectrometers & spectroscopic techniques

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Virtual channel based aggregated multi-source multicast across backbone

Virtual channel based aggregated multi-source multicast acro...

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International Conference on Control engineering and Information System, ICCEIS 2014

作者： Chen, Y. Li, C.L. Huang, K.X. Zhang, X.B. State Key Laboratory of Mathematical Engineering and Advanced Computing ZhengzhouHenan China

ISBN: (纸本)9781138026858

To achieve the tradeoff between state aggregation and traffic redundancy, different branches of the tree are formed in backbone and receivers’ access networks. In receivers’ access network, each branch corresponds to a multicast group;while in the backbone and on the paths of senders to backbone, each branch corresponds to a multicast traffic class, which achieves multicast states aggregation. Simulation results show that VC-AMSM will result in some traffic redundancy, but it can greatly reduce the number of multicast states and control messages in the network. And the one-tree-one-traffic-class characteristic provides a preferable basis to reconfigure the routing to label switching. © 2015 Taylor & Francis Group, London.

关键词： Redundancy

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Automatic binary de-obfuscation based compiler optimization 6th

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6th International Conference on Swarm Intelligence, ICSI 2015 held in conjunction with the 2nd BRICS Congress on Computational Intelligence, CCI 2015

作者： Lin, Wei Fei, Jin-Long Cai, Rui-Jie State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450002 China

ISBN: (纸本)9783319204710

Junk code increase manual analysis difficulty in reverse engineering, and seriously disturb the automatic analysis process of ant code obfuscating, so find a junk code removing method has a great significance in the field of reverse engineering. Based on this, aiming at the problem that the executable context-dependent junk code is difficult to remove automatically, this paper proposes a junk code removing method based on idle register slicing, through analyzing data dependencies between instructions, get all the idle register of all instruction in code block, slice the code block by idle registers respectively, remove all the junk code in the slice instruction. Experiments show that, this method can remove embedded executable junk code rapidly and accurately, improve the efficiency of reverse engineering. © Springer International Publishing Switzerland 2015.

关键词： Reverse engineering

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keyword search over encrypted data in cloud computing from lattices in the standard model 2nd

Keyword search over encrypted data in cloud computing from l...

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2nd International Conference on Cloud computing and Big Data, CloudCom-Asia 2015

作者： Gu, Chunxiang Zheng, Yonghui Kang, Fei Xin, Dan State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001 China

ISBN: (纸本)9783319284293

As cloud computing becomes popular, more and more sensitive information are being centralized into the cloud. Hence, we need some mechanism to support operations on encrypted data in many applications in cloud. Public key encryption with keyword search (PEKS) is a mechanism for searching on encrypted data. It enables user Alice to send a secret value TW to a cloud server that will enable the server to selectively retrieve encrypted messages containing the keyword, but learn nothing else. In this paper, we propose a PEKS scheme using lattices. Lattice-based cryptosystems are becoming an increasingly popular in the research community. Our scheme can be proven secure in the standard model with the hardness of the standard Learning With Errors problem. © Springer International Publishing Switzerland 2015.

关键词： Cloud computing

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Scalable QoS multicast provisioning in wide-sense circuit tree

Scalable QoS multicast provisioning in wide-sense circuit tr...

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International Conference on Control engineering and Information System, ICCEIS 2014

作者： Huang, K.X. Chen, Y. Li, C.L. Zhang, X.B. State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou Henan China

ISBN: (纸本)9781138026858

It is still a hot topic that how to provide dynamic reconfigurable QoS multicast service in the network. The MPLS network combined with the DiffServ can provide end-to-end QoS guarantee for differentiated services, and aggregated multicast can reduce the cost of maintaining multicast state. In this paper, based on the technology of the Wide-sense circuit Tree technique, we propose an architecture to provide the dynamic QoS multicast service, in the reconfigurable network environment. With the idea of aggregated multicast to reduce multicast state, and using the Wide-sense circuit technology to guarantee the quality of the transport service. © 2015 Taylor & Francis Group, London.

关键词： Quality of service

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