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arXiv 2023年

作者： Wang, Shuo Fang, Jing-Zhi Wu, Ze-Nan Lu, Sirong Wei, Zhongming Wang, Zhiwei Huang, Wen Yao, Yugui Yang, Jia-Jie Chen, Tingyong Lin, Ben-Chuan Yu, Dapeng Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China International Quantum Academy Shenzhen518048 China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement Ministry of Education School of Physics Beijing Institute of Technology Beijing100081 China Micronano Center Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems Beijing Institute of Technology Beijing100081 China

The recently discovered kagome superconductors offer a promising platform for investigating intertwined orders and novel states, including topology, superconductivity, charge density waves, and more. The interplay among these orders can spontaneously break rotational symmetry, giving rise to exotic phenomena such as nematicity or even nematic superconductivity. Here we present our findings on the two-fold symmetric superconductivity in thin-flake RbV3Sb5 in response to direction-dependent in-plane magnetic fields, in contrast to the inherent six-fold structural symmetry of the crystal lattice. The two-fold symmetry was evidenced through a combination of magnetoresistance transport experiments, critical magnetic field measurements, and observations of anisotropic superconducting gaps. Additionally, by altering the experimental configuration, we also detected the presence of six-fold symmetric components superimposed on the two-fold symmetry at the boundary between normal and superconducting states. Our results underscore the correlation-driven symmetry-breaking phenomena and emphasize the potential of this correlated kagome family as a promising platform for investigating intertwined orders, including unconventional superconductivity. © 2023, CC BY-NC-SA.

关键词： Charge density

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Generalized Skyrmions

arXiv

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arXiv 2024年

作者： Wang, An Aloysius Zhao, Zimo Ma, Yifei Cai, Yuxi Morris, Stephen M. He, Honghui Luo, Lin Xie, Zhenwei Shi, Peng Shen, Yijie Zayats, Anatoly V. Yuan, Xiaocong He, Chao Department of Engineering Science University of Oxford Parks Road OxfordOX1 3PJ United Kingdom Guangdong Research Center of Polarization Imaging and Measurement Engineering Technology Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen518055 China College of Engineering Peking University Beijing100871 China Nanophotonics Research Center Shenzhen Key Laboratory of Micro-Scale Optical Information Technology Institute of Microscale Optoelectronics Shenzhen University Shenzhen518060 China Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore Singapore Department of Physics London Centre for Nanotechnology King’s College London London United Kingdom

Skyrmions are important topologically non-trivial fields characteristic of models spanning scales from the microscopic [1,2] to the cosmological [3]. However, the Skyrmion number can only be defined for fields with specific boundary conditions, limiting its use in broader contexts. Here, we address this issue through a generalized notion of the Skyrmion derived from the De Rham cohomology of compactly supported forms [4]. This allows for the definition of an entirely new `∞i=1 Zi-valued topological number that assigns a tuple of integers (a1, . . ., ak) ∈ Zk to a field instead of a single number, with no restrictions to its boundary. The notion of the generalized Skyrmion presented in this paper is completely abstract and can be applied to vector fields in any discipline, not unlike index theory within dynamical systems [5]. To demonstrate the power of our new formalism, we focus on the propagation of optical polarization fields and show that our newly defined generalized Skyrmion number significantly increases the dimension of data that can be stored within the field while also demonstrating strong robustness. Our work represents a fundamental paradigm shift away from the study of fields with natural topological character to engineered fields that can be artificially embedded with topological structures. Copyright © 2024, The Authors. All rights reserved.

关键词： Topology

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Sensing With Random Communication Signals

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IEEE Network 2025年

作者： Lu, Shihang Liu, Fan Xiong, Yifeng Du, Zhen Cui, Yuanhao Li, Shuangyang Yuan, Weijie Yang, Jie Jin, Shi Southeast University National Mobile Communications Research Laboratory Nanjing210096 China Beijing University of Posts and Telecommunications School of Information and Communication Engineering Beijing100876 China Nanjing University of Information Science and Technology School of Electronic and Information Engineering Nanjing210044 China Technical University of Berlin Faculty of Electrical Engineering and Computer Science Berlin10587 Germany Shenzhen518055 China Frontiers Science Center for Mobile Information Communication and Security China Southeast University MOE Key Laboratory of Measurement and Control of Complex Systems of Engineering Nanjing211189 China

Communication-centric Integrated Sensing and Communication (ISAC) has been recognized as a promising methodology to implement wireless sensing functionality over existing network architectures, due to its cost-effectiveness and backward compatibility to legacy cellular systems. However, the inherent randomness of the communication signal may incur huge fluctuations in sensing capabilities, leading to unfavorable detection and estimation performance. To address this issue, we elaborate on random ISAC signal processing methods in this article, aiming at improving the sensing performance without unduly deteriorating the communication functionality. Specifically, we commence by discussing the fundamentals of sensing with random communication signals, including the performance metrics and optimal ranging waveforms. Building on these concepts, we then present a general framework for random ISAC signal transmission, followed by an in-depth exploration of time-domain pulse shaping, frequency-domain constellation shaping, and spatial-domain precoding methods. We provide a comprehensive overview of each of these topics, including models, results, and design guidelines. Finally, we conclude this article by identifying several promising research directions for random ISAC signal transmission. © 2025 IEEE.

关键词： Mobile telecommunication systems

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Spin-Hall effect induced by transverse optical spin

Spin-Hall effect induced by transverse optical spin

引用

Novel Optical Materials and Applications, NOMA 2022

作者： Peng, Liang Ren, Hang Liu, Yachao Lan, Tianwei Xu, Kuiwen Ye, Dexin Sun, Hongbo Xu, Su Chen, Hongsheng Zhang, Shuang School of Information and Electrical Engineering Zhejiang University City College Hangzhou China School of Electronics and Information Hangzhou Dianzi University Hangzhou China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun China Institute of Microscale Optoelectronics Shenzhen University Shenzhen China Zhejiang University Hangzhou China Department of Precision Instrument State Key Laboratory of Precision Measurement Technology and Instruments Tsinghua University Beijing China State Key Laboratory of Modern Optical Instrumentation Interdisciplinary Center for Quantum Information College of Information Science and Electronic Engineering Zhejiang University Hangzhou China Department of Physics University of Hong Kong Hong Kong Department of Electrical and Electronic Engineering University of Hong Kong Hong Kong

We demonstrate spin-Hall effect for transversely spinning light at the interface of a metamaterial. The beam shift takes place in the plane of incidence, in contrast to the conventional spin-Hall effect of light. ... 详细信息

ISBN: (纸本)9781557528209

关键词： Spin Hall effect

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In situ construction of heterostructured bimetallic sulfide/phosphide with rich interfaces for high-performance aqueous Zn-ion batteries

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Science China Materials 2022年第2期65卷 356-363页

作者： Fang Yang Yuenian Shen Ze Cen Jie Wan Shijie Li Guanjie He Junqing Hu Kaibing Xu School of Mechanical and Automotive Engineering Shanghai University of Engineering ScienceShanghai 201620China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Research Center for Analysis and Measurement&College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Institute of Innovation&Application National Engineering Research Center for Marine AquacultureZhejiang Ocean UniversityZhoushan 316022China School of Chemistry University of LincolnBrayford PoolLincoln LN67TSUK College of Health Science and Environmental Engineering Shenzhen Technology UniversityShenzhen 518118China

It is still challenging to develop suitable cathode structures for high-rate and stable aqueous Zn-ion ***,a phosphating-assisted interfacial engineering strategy is designed for the controllable conversion of NiCo_(2)S_(4) nanosheets into heterostructured NiCoP/NiCo_(2)S_(4) as the cathodes in aqueous Zn-ion *** multicomponent heterostructures with rich interfaces can not only improve the electrical conductivity but also enhance the diffusion pathways for Zn-ion *** expected,the NiCoP/NiCo_(2)S_(4) electrode has high performance with a large specific capacity of 251.1 mA h g^(−1) at a high current density of 10 A g^(−1) and excellent rate capability(retaining about 76%even at 50 A g^(−1)).Accordingly,the Zn-ion battery using NiCoP/NiCo_(2)S_(4) as the cathode delivers a high specific capacity(265.1 mA h g^(−1) at 5 A g^(−1)),a long-term cycling stability(96.9%retention after 5000 cycles),and a competitive energy density(444.7W h kg^(−1) at the power density of 8.4 kW kg^(−1)).This work therefore provides a simple phosphating-assisted interfacial engineering strategy to construct heterostructured electrode materials with rich interfaces for the development of high-performance energy storage devices in the future.

关键词： phosphating heterostructure NiCoP/NiCo2S4 Znion batteries high capacity

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Reconciled estimation of Antarctic ice sheet mass balance and contribution to global sea level change from 1996 to 2021

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Science China Earth Sciences 2024年第11期67卷 3562-3578页

作者： Rongxing LI Guojun LI Gang HAI Huan XIE Yuan CHENG Wei CHEN Xiangbin CUI Minghu DING Chunchun GAO Tong HAO Changqing KE Chuanjin LI Jin LI Yan LIU Jiangjun RAN Jiawen REN Qiang SHEN Yunzhong SHEN Hongling SHI Songyun WANG Zemin WANG Jingang ZHAN Baojun ZHANG Min ZHONG Chunxia ZHOU Center for Spatial Information Science and Sustainable Development Applications Tongji UniversityShanghai 200092China College of Surveying and Geo-informatics Tongji UniversityShanghai 200092China Institute for the Conservation of Cultural Heritage School of Cultural Heritage and Information ManagementShanghai UniversityShanghai 200444China College of Resource Environment and Tourism Hubei University of Arts and ScienceXiangyang 441053China Polar Research Institute of China Shanghai 200136China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China College of Geodesy and Geomatics Shandong University of Science and TechnologyQingdao 266590China School of Geography and Ocean Science Nanjing UniversityNanjing 210023China State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China State Key Laboratory of Remote Sensing Science Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Geodesy and Earth’s Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430077China Center for Space Research University of Texas at AustinAustin TX 78759USA Chinese Antarctic Center of Surveying and Mapping Wuhan UniversityWuhan 430079China School of Geospatial Engineering and Science Sun Yat-sen UniversityZhuhai 519082China

The Antarctic Ice Sheet(AIS)has been losing ice mass and contributing to global sea level rise(GSLR).Given its mass that is enough to cause~58 m of GSLR,accurate estimation of mass balance trend is critical for AIS mass loss monitoring and sea level rise ***,we present an improved approach to reconciled solutions of mass balance in AIS and its regions from multiple contributing solutions using the input-out,altimetric,and gravimetric *** comparison to previous methods,such as IMBIE 2018,this approach utilizes an adaptive data aggregation window to handle the heterogeneity of the contributing solutions,including the number of solutions,temporal distributions,uncertainties,and estimation *** improved the regression-based method by using a two-step procedure that establishes ensembled solutions within each method(input-output,altimetry,or gravimetry)and then estimates the method-independent reconciled *** the first time,16contributing solutions from 8 Chinese institutions are used to estimate the reconciled mass balance of AIS and its regions from1996 to *** results show that AIS has lost a total ice mass of~3213±253 Gt during the period,an equivalent of~8.9±0.7 mm of *** is a sustained mass loss acceleration since 2006,from 88.1±3.6 Gt yr^(-1)during 1996–2005 to 130.7±8.4 Gt yr^(-1)during 2006–2013 and further to 157.0±9.0 Gt yr^(-1)during 2014–*** mass loss signal in the West Antarctica and Antarctic Peninsula is dominant and clearly presented in the reconciled estimation and contributing solutions,regardless of estimation methods used and fluctuation of surface mass *** and challenges remain in mass balance estimation in East *** reconciled estimation approach can be extended and applied for improved mass balance estimation in the Greenland Ice Sheet and mountain glacier regions.

关键词： Antarctic Ice Sheet Ice mass loss acceleration Sea level rise Reconciled estimation

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Nano device fabrication for in-memory and in-sensor reservoir computing

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International Journal of Extreme Manufacturing 2025年第1期7卷 46-71页

作者： Yinan Lin Xi Chen Qianyu Zhang Junqi You Renjing Xu Zhongrui Wang Linfeng Sun Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081People’s Republic of China Beijing Key Laboratory of Nanophotonics&Ultrafine Optoelectronic Systems School of PhysicsBeijing Institute of TechnologyBeijing 100081People’s Republic of China Department of Electrical and Electronic Engineering The University of Hong KongPokfulam RoadHong Kong Special Administrative Region of ChinaPeople’s Republic of China ACCESS-AI Chip Center for Emerging Smart Systems InnoHK CentersHong Kong Science ParkHong Kong Special Administrative Region of ChinaPeople’s Republic of China School of Microelectronics Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Thrust of Microelectronics of Function Hub The Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400People’s Republic of China

Recurrent neural networks(RNNs)have proven to be indispensable for processing sequential and temporal data,with extensive applications in language modeling,text generation,machine translation,and time-series *** their versatility,RNNs are frequently beset by significant training expenses and slow convergence times,which impinge upon their deployment in edge AI *** computing(RC),a specialized RNN variant,is attracting increased attention as a cost-effective alternative for processing temporal and sequential data at the ***’s distinctive advantage stems from its compatibility with emerging memristive hardware,which leverages the energy efficiency and reduced footprint of analog in-memory and in-sensor computing,offering a streamlined and energy-efficient *** review offers a comprehensive explanation of RC’s underlying principles,fabrication processes,and surveys recent progress in nano-memristive device based RC systems from the viewpoints of in-memory and in-sensor RC *** covers a spectrum of memristive device,from established oxide-based memristive device to cutting-edge material science developments,providing readers with a lucid understanding of RC’s hardware implementation and fostering innovative designs for in-sensor RC ***,we identify prevailing challenges and suggest viable solutions,paving the way for future advancements in in-sensor RC technology.

关键词： reservoir computing memristive device fabrication compute-in-memory in-sensor computing

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Deep Neural Network Enhanced Chip-on-Board Hybrid-Packaged Photonic-Electrical Silicon Transceiver for High-speed Optical Interconnects

Deep Neural Network Enhanced Chip-on-Board Hybrid-Packaged P...

引用

Conference on Lasers and Electro-Optics (CLEO)

作者： Jun Qin Qipeng Yang Changhao Han Yan Zhou Yunhao Zhang Yichen WU Yu Sun Junde Lu Siming Liu Yueqin Li Jian Sun Miao Min Weiwei Hu Zhixue He Lei Wang Shaohua Yu Haowen Shu Xingjun Wang Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science and Technology University Beijing China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing China Department of Electrical and Computer Engineering University of California Santa Barbara CA USA Peking University Yangtze Delta Institute of Optoelectronics Nantong China Peng Cheng Laboratory Shenzhen China State Key Laboratory of Information Photonics and Optical Communications BUPT Beijing China

We explore implementing a multilevel deep neural network to enhance the performance of a 4-channel photonic-electrical hybrid-packaged silicon transceiver. Stable transmission and reception of 150 Gbps/λ PAM4 signals... 详细信息

ISBN: (纸本)9798350369311

关键词： Electric potential Optical interconnections System performance Artificial neural networks Transceivers Silicon Electro-optical waveguides Photonics

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Transient Response of High Dimensional Nonlinear Dynamic System for a Rotating Cantilever Twisted Plate

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Advances in Applied Mathematics and Mechanics 2020年第6期12卷 1542-1564页

作者： Yuxin Hao Xiaojun Gu Wei Zhang Jie Chen College of Mechanical Engineering&Beijing Key Laboratory of Electromechanical System Measurement and Control Beijing Information Science and Technology UniversityBeijing 100192China College of Mechanical Engineering Beijing University of TechnologyBeijing 100124China Architecture and Civil Engineering Research Center Shenzhen Research InstituteCity University of Hong KongShenzhenGuangdong 518055China

Dynamic transient responses of rotating twisted plate under the air-blast loading and step loading respectively considering the geometric nonlinear relationships are investigated using classical shallow shell *** applying energy principle,a novel high dimensional nonlinear dynamic system of the rotating cantilever twisted plate is derived for the first *** use of variable mode functions by polynomial functions according to the twist angles and geometric of the plate makes it more accurate to describe the dynamic system than that using the classic cantilever beam functions and the free-free beam *** comparison researches are carried out between the present results and other literatures to validate present model,formulation and computer *** of motion describing the transient high dimensional nonlinear dynamic response are reduced to a four degree of freedom dynamic system which expressed by out-plane *** effects of twisted angle,stagger angle,rotation speed,load intensity and viscous damping on nonlinear dynamic transient responses of the twisted plate have been ***’s important to note that although the homogeneous and isotropic material is applied here,it might be helpful for laminated composite,functionally graded material as long as the equivalent material parameters are obtained.

关键词： Cantilever twisted plate rotating blast loading transient response high dimensional nonlinear dynamics

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Interaction-induced multiparticle bound states in the continuum

arXiv

引用

arXiv 2023年

作者： Huang, Boning Ke, Yongguan Zhong, Honghua Kivshar, Yuri S. Lee, Chaohong Institute of Quantum Precision Measurement State Key Laboratory of Radio Frequency Heterogeneous Integration College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Laboratory of Quantum Engineering and Quantum Metrology School of Physics and Astronomy Sun Yat-Sen University Zhuhai Campus Zhuhai519082 China Department of Physics Central South University of Forestry and Technology Changsha410004 China Nonlinear Physics Center Australian National University CanberraACT2601 Australia Shenzhen518045 China

Bound states in the continuum (BICs) are localized modes residing in the radiation continuum. They were first predicted for single-particle states, and became a general feature of many wave systems. In many-body quantum physics, it is still unclear what would be a close analog of BICs, and whether interparticle interaction may induce BICs. Here, we predict a novel type of multiparticle states in the interaction-modulated Bose-Hubbard model that can be associated with the BIC concept. Under periodic boundary conditions, a so-called quasi-BIC appears as a bound pair residing in a standing wave formed by the third particle. Under open boundary conditions, such a hybrid state becomes an eigenstate of the system. We demonstrate that the Thouless pumping of the quasi-BICs can be realized by modulating the onsite interactions in space and time. Surprisingly, while the center-of-mass of the quasi-BIC is shifted by a unit cell in one cycle, the bound pair moves in the opposite direction with the standing wave. © 2023, CC BY.

关键词： Hubbard model

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