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arXiv 2025年

作者： Ma, Lingquan Hua, Jun Schäfer, Andreas Shu, Hai-Tao Su, Yushan Sun, Peng Walter, Lisa Wang, Wei Xiong, Xiaonu Yang, Yi-Bo Zhang, Jian-Hui Zhang, Qi-An Center of Advanced Quantum Studies Department of Physics Beijing Normal University Beijing100875 China School of Science and Engineering The Chinese University of Hong Kong Shenzhen518172 China Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter Institute of Quantum Matter South China Normal University Guangzhou510006 China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Guangdong Provincial Key Laboratory of Nuclear Science Southern Nuclear Science Computing Center South China Normal University Guangzhou510006 China Institut für Theoretische Physik Universität Regensburg RegensburgD-93040 Germany Institute of Particle Physics Central China Normal University Wuhan430079 China Department of Physics University of Maryland College ParkMD20742 United States Institute of Modern Physics Chinese Academy of Sciences Gansu Province Lanzhou730000 China Shanghai Key Laboratory for Particle Physics and Cosmology School of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China Institute of Modern Physics Chinese Academy of Sciences Guangdong Province Huizhou516000 China School of Physics Central South University Changsha418003 China CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing100190 China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced Study UCAS Hangzhou310024 China International Centre for Theoretical Physics Asia-Pacific Hangzhou Beijing China University of Chinese Academy of Sciences School of Physical Sciences Beijing100049 China School of Physics Beihang University Beijing102206 China

We present the first lattice QCD calculation of the quark transverse spin-momentum correlation, i.e., the naive time-reversal-odd Boer-Mulders function, of the nucleon, using large-momentum effective theory (LaMET). The calculation is carried out on an ensemble with lattice spacing a = 0.098 fm and pion mass 338 MeV, at various proton momenta up to 2.11 GeV. We have implemented perturbative matching up to the next-to-next-to-leading order together with a renormalization-group resummation improvement. The result exhibits a decay behavior with increasing transverse separation b̝. We also compare the results in the nucleon and pion. Copyright © 2025, The Authors. All rights reserved.

关键词： Momentum

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The Propagation Strategy Model of Taint Analysis

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Journal of Physics: Conference Series 2020年第4期1486卷

作者： Yuzhu Ren Jiangtao Zhao Cao Zhang State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou Henan 450000 China

The taint propagation strategy is the core of the taint analysis technology. When the taint analysis toolsanalyses the target program, it needs to mark the target data according to the formulatedtaint propagation strategy. Formulating a reasonable strategy for taint propagation can effectively improve the accuracy of taint analysis. There are two difficulties in developing the taint propagation strategy, namely, alias analysis in static taint analysis and indirect jump in dynamic taint analysis. In our paper, we propose a taint propagation strategy at the intermediate representation language level, which can effectively improve the accuracy of taint propagation.

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Using entropy-driven amplifier circuit response to build nonlinear model under the influence of Lévy jump

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BMC bioinformatics 2022年第SUPPL 12期22卷 437页

作者： Hao Fu Hui Lv Qiang Zhang Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education School of Software Engineering Dalian University Dalian 116622 China. Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education School of Software Engineering Dalian University Dalian 116622 China. lh8481@***. State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang 110004 China. lh8481@***. Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education School of Software Engineering Dalian University Dalian 116622 China. zhangq@***. School of Computer Science and Technology Dalian University of Technology Dalian 116024 China. zhangq@***.

BACKGROUND:Bioinformatics is a subject produced by the combination of life science and computer science. It mainly uses computer technology to study the laws of biological systems. The design and realization of DNA circuit reaction is one of the important contents of bioinformatics. RESULTS:In this paper, nonlinear dynamic system model with Lévy jump based on entropy-driven amplifier (EDA) circuit response is studied. Firstly, nonlinear biochemical reaction system model is established based on EDA circuit response. Considering the influence of disturbance factors on the system, nonlinear biochemical reaction system with Lévy jump is built. Secondly, in order to prove that the constructed system conforms to the actual meaning, the existence and uniqueness of the system solution is analyzed. Next, the sufficient conditions for the end and continuation of EDA circuit reaction are certified. Finally, the correctness of the theoretical results is proved by numerical simulation, and the reactivity of THTSignal in EDA circuit under different noise intensity is verified. CONCLUSIONS:In EDA circuit reaction, the intensity of external noise has a significant impact on the system. The end of EDA circuit reaction is closely related to the intensity of Lévy noise, and Lévy jump has a significant impact on the nature of biochemical reaction system.

关键词： Entropy-driven amplifier Lyapunov function Lévy jump Nonlinear system model

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Improving Electrocatalytic Oxygen Evolution through Local Field Distortion in Mg/Fe Dual-site Catalysts

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Angewandte Chemie 2023年第52期135卷

作者： Jing Zhang Yufeng Zhao Wanting Zhao Jing Wang Yongfeng Hu Chengyu Huang Xingli Zou Yang Liu Dengsong Zhang Xionggang Lu Hongjin Fan Yanglong Hou College of Sciences&Institute for Sustainable Energy Shanghai University Shanghai 200444 China School of Materials Science and Engineering Peking University Beijing Key Laboratory for Magneto Electric Materials and Devices (BKLMMD) Beijing 100871 China State Key Laboratory of Metastable Materials Science and Technology Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse Yanshan University Qinhuangdao 066004 China Canadian Light Source University of Saskatchewan Saskatoon Saskatchewan Canada State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering Shanghai University Shanghai 200444 P. R. China School of Physical and Mathematical Sciences Nanyang Technological University Singapore 639798 Singapore

Transition metal single atom electrocatalysts (SACs) with metal-nitrogen-carbon (M−N−C) configuration show great potential in oxygen evolution reaction (OER), whereby the spin-dependent electrons must be allowed to transfer along reactants (OH − /H 2 O, singlet spin state) and products (O 2 , triplet spin state). Therefore, it is imperative to modulate the spin configuration in M−N−C to enhance the spin-sensitive OER energetics, which however remains a significant challenge. Herein, we report a local field distortion induced intermediate to low spin transition by introducing a main-group element (Mg) into the Fe−N−C architecture, and decode the underlying origin of the enhanced OER activity. We unveil that, the large ionic radii mismatch between Mg 2+ and Fe 2+ can cause a FeN 4 in-plane square local field deformation, which triggers a favorable spin transition of Fe 2+ from intermediate (d xy 2 d xz 2 d yz 1 d z2 1 , 2.96 μ B ) to low spin (d xy 2 d xz 2 d yz 2 , 0.95 μ B ), and consequently regulate the thermodyna-mics of the elementary step with desired Gibbs free energies. The as-obtained Mg/Fe dual-site catalyst demonstrates a superior OER activity with an overpotential of 224 mV at 10 mA cm −2 and an electrolysis voltage of only 1.542 V at 10 mA cm −2 in the overall water splitting, which outperforms those of the state-of-the-art transition metal SACs.

关键词： Oxygen evolution reaction Spin regulation Local field distortion Dual-site Overall water splitting

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Analytic approximations of Von Krmn plate under arbitrary uniform pressure—equations in integral form

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Science China(Physics,Mechanics & Astronomy) 2018年第1期61卷 57-67页

作者： XiaoXu Zhong ShiJun Liao School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Collaborative Innovative Center for Advanced Ship and Deep-Sea Exploration State Key Laboratory of Ocean Engineering Ministry-of-Education Key Laboratory of Scientific and Engineering Computing

Analytic approximations of the Von Karman＇s plate equations in integral form for a circular plate under external uniform pressure to arbitrary magnitude are successfully obtained by means of the homotopy analysis method （HAM）, an analytic approximation technique for highly nonlinear problems. Two HAM-based approaches are proposed for either a given external uniform pressure Q or a given central deflection, respectively. Both of them are valid for uniform pressure to arbitrary magnitude by choosing proper values of the so-called convergence-control parameters c1 and c2 in the frame of the HAM. Besides, it is found that the HAM- based iteration approaches generally converge much faster than the interpolation iterative method. Furthermore, we prove that the interpolation iterative method is a special case of the first-order HAM iteration approach for a given external uniform pressure Q when c1= -0 and c2 = -1, where 0 denotes the interpolation iterative parameter. Therefore, according to the convergence theorem of Zheng and Zhou about the interpolation iterative method, the HAM-based approaches are valid for uniform pressure to arbitrary magnitude at least in the special case c1 = -0 and c2= -1. In addition, we prove that the HAM approach for the Von karman＇s plate equations in differential form is just a special case of the HAM for the Von karman＇s plate equations in integral form mentioned in this paper. All of these illustrate the validity and great potential of the HAM for highly nonlinear problems, and its superiority over perturbation techniques.

关键词： circular plate high nonlinearity homotopy analysis method

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Mobility and Applied Load-Oriented Configuration Design Method of Hybrid and Parallel Mechanisms

SSRN

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SSRN 2022年

作者： Yuan, Bingbing Wang, Hongguang Yuan, Hui Dai, Jiansheng Pan, Xinan State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences Shenyang110169 China University of Chinese Academy of Sciences Beijing100049 China School of Mechanical Engineering and Automation Northeastern University Shenyang110004 China Advanced Kinematics and Reconfigurable Robotics Lab School of Natural and Mathematical Sciences King's College London Strand LondonWC2R 2LS United Kingdom

This paper proposed the mobility and applied load-oriented method(MALOM) to solve the collaborative design challenge of hybrid/parallel mechanisms involving mobility, force/motion, and topological parameters. Firstly, the mechanism's mobility is characterized by the orientation and position feature screw system (OPFSS) first defined. Then the applied load is represented by the wrench. Furthermore, the unit power, the power topology, unit power adjacency matrix, and unit power density indexes are newly defined and used to establish the mathematical relationship between mobility, applied load, and optimization indexes. Thirdly, The topology parameter design is based on the series, parallel and hybrid operations of OPFSS. These three steps establish the MALOM, which is verified by taking the configuration design of the three-translation mechanism as an example. Finally, a novel 5DOF hybrid manipulator has been designed and tested based on the MALOM. The manipulator has a large load-to-weight ratio and satisfactory kinematic characteristics. The MALOM is feasible and practical, which is illustrated by experimental results. © 2022, The Authors. All rights reserved.

关键词： Manipulators

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Full reconstruction of simplicial complexes from binary time-series data

Research Square

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Research Square 2021年

作者： Wang, Huan Ma, Chuang Chen, Han-Shuang Lai, Ying-Cheng Zhang, Hai-Feng The Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education School of Mathematical Science Anhui University Hefei230601 China School of Internet Anhui University Hefei230601 China School of Physics and Material Science Anhui University Hefei230601 China School of Electrical Computer and Energy Engineering Arizona State University TempeAZ85287 United States

Previous efforts on data-based reconstruction focused on complex networks with pairwise or two-body interactions. There is a growing interest in networks with high-order or many-body interactions, raising the need to reconstruct such networks based on observational data. We develop a general framework combining statistical inference and expectation maximization to fully reconstruct 2-simplicial complexes with two- and three-body interactions based on binary time-series data from social contagion dynamics. We further articulate a two-step scheme to improve the reconstruction accuracy while significantly reducing the computational load. Through synthetic and real-world 2-simplicial complexes, we validate the framework by showing that all the connections can be faithfully identified and the full topology of the 2-simplicial complexes can be inferred. The effects of noisy data or stochastic disturbance are studied, demonstrating the robustness of the proposed framework. © 2021, CC BY.

关键词： Complex networks

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Direct observation of chiral edge current at zero magnetic field in odd-layer MnBi2Te4

arXiv

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arXiv 2023年

作者： Zhu, Jinjiang Feng, Yang Zhou, Xiaodong Wang, Yongchao Lian, Zichen Lin, Weiyan He, Qiushi Lin, Yishi Wang, Youfang Yao, Hongxu Li, Hao Wu, Yang Wang, Jing Shen, Jian Zhang, Jinsong Wang, Yayu Wang, Yihua State Key Laboratory of Surface Physics Department of Physics Fudan University Shanghai200433 China Beijing Academy of Quantum Information Sciences Beijing100193 China Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai200433 China Zhangjiang Fudan International Innovation Center Fudan University Shanghai200433 China Shanghai Qi Zhi Institute Shanghai China Beijing Innovation Center for Future Chips Tsinghua University Beijing100084 China State Key Laboratory of Low Dimensional Quantum Physics Department of Physics Tsinghua University Beijing100084 China School of Materials Science and Engineering Tsinghua University Beijing100084 China Tsinghua-Foxconn Nanotechnology Research Center Department of Physics Tsinghua University Beijing100084 China Department of Mechanical Engineering Tsinghua University Beijing100084 China Collaborative Innovation Center of Advanced Microstructures Nanjing China Shanghai Research Center for Quantum Sciences Shanghai201315 China Frontier Science Center for Quantum Information Beijing100084 China Hefei National Laboratory Hefei230088 China

The chiral edge current is the boundary manifestation of the Chern number of a quantum anomalous Hall (QAH) insulator. Its direct observation is assumed to require well-quantized Hall conductance, and is so far lacking. The recently discovered van der Waals antiferromagnet MnBi2Te4 is theorized as a QAH in odd-layers but has shown Hall resistivity below the quantization value at zero magnetic field. Here, we perform scanning superconducting quantum interference device (sSQUID) microscopy on these seemingly failed QAH insulators to image their current distribution. When gated to the charge neutral point, our device exhibits edge current, which flows unidirectionally on the odd-layer boundary both with vacuum and with the even-layer. The chirality of such edge current reverses with the magnetization of the bulk. Surprisingly, we find the edge channels coexist with finite bulk conduction even though the bulk chemical potential is in the band gap, suggesting their robustness under significant edge-bulk scattering. Our result establishes the existence of chiral edge currents in a topological antiferromagnet and offers an alternative for identifying QAH states. © 2023, CC BY.

关键词： Bismuth compounds

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Ultra-bright multiplexed energy-time entangled photon generation from lithium niobate on insulator chip

arXiv

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arXiv 2020年

作者： Xue, Guang-Tai Niu, Yun-Fei Liu, Xiaoyue Duan, Jia-Chen Chen, Wenjun Pan, Ying Jia, Kunpeng Wang, Xiaohan Liu, Hua-Ying Zhang, Yong Xu, Ping Zhao, Gang Cai, Xinlun Gong, Yan-Xiao Hu, Xiaopeng Xie, Zhenda Zhu, Shining National Laboratory of Solid State Microstructures School of Physics School of Electronic Science and Engineering College of Engineering and Applied Sciences Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing210093 China State Key Laboratory of Optoelectronic Materials and Technologies School of Physics and Engineering Sun Yat-sen University Guangzhou510275 China Institute for Quantum Information and State Key Laboratory of High Performance Computing College of Computing National University of Defense Technology Changsha410073 China

High-flux entangled photon source is the key resource for quantum optical study and application. Here it is realized in a lithium niobate on isolator (LNOI) chip, with 2.79×1011 Hz/mW photon pair rate and 1.53×109 Hz/nm/mW spectral brightness. These data are boosted by over two orders of magnitude compared to existing technologies. A 130-nm broad bandwidth is engineered for 8-channel multiplexed energy-time entanglement. Harnessed by high-extinction frequency correlation and Franson interferences up to 99.17% visibility, such energy-time entanglement multiplexing further enhances high-flux data rate, and warrants broad applications in quantum information processing on a chip. Copyright © 2020, The Authors. All rights reserved.

关键词： Photons

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The Quantum Internet (Technical Version)

arXiv

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arXiv 2025年

作者： Rohde, Peter P. Huang, Zixin Ouyang, Yingkai Huang, He-Liang Su, Zu-En Devitt, Simon Ramakrishnan, Rohit Mantri, Atul Tan, Si-Hui Liu, Nana Harrison, Scott Radhakrishnan, Chandrashekar Brennen, Gavin K. Baragiola, Ben Q. Dowling, Jonathan P. Byrnes, Tim Munro, William J. Centre for Quantum Software and Information Faculty of Engineering and Information Technology University of Technology Sydney SydneyNSW Australia Hearne Institute for Theoretical Physics Louisiana State University Baton Rouge United States School of Mathematical and Physical Sciences Macquarie University NSW2109 Australia School of Mathematical and Physical Sciences University of Sheffield SheffieldS3 7RH United Kingdom Henan Key Laboratory of Quantum Information and Cryptography Henan Zhengzhou450000 China Hefei National Laboratory for Physical Sciences at Microscale Department of Modern Physics University of Science & Technology of China Hefei China CAS Centre for Excellence and Synergetic Innovation Centre in Quantum Information & Quantum Physics University of Science & Technology of China Hefei China CAS-Alibaba Quantum Computing Laboratory Shanghai China InstituteQ Aalto University Espoo02150 Finland Indian Institute of Science Bangalore India Singapore University of Technology & Design Singapore Centre for Quantum Technologies National University of Singapore Singapore Horizon Quantum Ireland 24 Fitzwilliam Place Dublin 2 D02 T296 Ireland Institute of Natural Sciences Shanghai Jiao Tong University Shanghai200240 China School of Mathematical Sciences Shanghai Jiao Tong University Shanghai200240 China Ministry of Education Key Laboratory in Scientific and Engineering Computing Shanghai Jiao Tong University Shanghai200240 China Shanghai Artificial Intelligence Laboratory Shanghai China University of Michigan Shanghai Jiao Tong University Joint Institute Shanghai200240 China Leibniz Institute for Research & Information in Education Frankfurt am Main Germany Department of Computer Science and Engineering NYU Shanghai 567 West Yangsi Road Shanghai200124 China Centre of Excellence in Engineered Quantum Systems Macquarie University NSW Australia Centre for Quantum Computation and Communication Technology School of Science RMIT University VIC

The desire to share and unite remote digital assets motivated the development of the classical internet, the enabler of the entire 21st century economy and our modern way of life. As we enter the quantum era, it is to be expected there will be a similar demand for networking quantum assets, motivating a global quantum internet for bringing together the world's quantum resources, leveraging off their exponential trajectory in capability. We present models for quantum networking, how they might be applied in the future, and the implications they will have. Socially, economically, politically and geostrategically, the upcoming era of quantum supremacy will be as significant for the 21st century as the transistor was for the 20th. The inherently different scaling in the computational power of quantum computers fundamentally changes the dynamics of how they will operate in the future. Given their high expected initial cost, a client/server model for outsourcing computation will be essential for enabling the accessibility and proliferation of this technology, and ensuring its economic viability. We therefore anticipate the emergence of cloud quantum computing, a model for outsourcing quantum computations to the network. We argue that economic efficiency will mandate that all future quantum computers be united into a single global virtual quantum computer, offering exponentially more power to all network participants than if they were to keep their resources to themselves. This model for the allocation of computational resources is uniquely quantum, with no classical analogue, completely altering the economic landscape for the future of computation. Given the sensitivity of much of the data to which future quantum computers are going to foreseeably be applied, protocols for encrypted quantum computation will be essential - the outsourcing of computations that neither an eavesdropper nor even the server performing the computation can spy upon. This will enable new models fo

关键词： Outsourcing

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