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中国科学:信息科学(英文版)
中国科学:信息科学(英文版)

周光召

月刊

1674-733X

informatics@scichina.org

010-64015683

100717

北京东黄城根北街16号

中国科学:信息科学(英文版)/Journal Science China Information SciencesCSCDCSTPCDEISCI
查看更多>>《中国科学》是中国科学院主办、中国科学杂志社出版的自然科学专业性学术刊物。《中国科学》任务是反映中国自然科学各学科中的最新科研成果,以促进国内外的学术交流。《中国科学》以论文形式报道中国基础研究和应用研究方面具有创造性的、高水平的和有重要意义的科研成果。在国际学术界,《中国科学》作为代表中国最高水平的学术刊物也受到高度重视。国际上最具有权威的检索刊物SCI,多年来一直收录《中国科学》的论文。1999年《中国科学》夺得国家期刊奖的第一名。
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    Physical origin of planar linear dichroism in van der Waals semiconductors using main group elements

    Qiang GAOYali YUKaiyao XINZiqi ZHOU...
    287-297页
    查看更多>>摘要:The polarization of light can provide abundant information regarding the polarization degree,phase shift,and Jones vector,which is important in light communication,environmental scanning,quality inspection,etc.Recently,two-dimensional(2D)semiconductors have provided an ideal platform for de-tecting polarized light due to their remarkable and tunable linear dichroism(LD).However,the physical mechanism of the in-plane LD in 2D semiconductors has not been systematically investigated,limiting the further exploration of the 2D anisotropic semiconductors and the directionality of experiments on polariza-tion photodetection.In this study,the in-plane LD of 100 types of 2D semiconductors composed of main group elements is investigated via first-principles theory combined with the decision tree algorithm and ex-perimental measurement.The in-plane asymmetry of the lattice and band edge wavefunctions are the main origins of the in-plane LD.2D semiconductors with in-plane orthorhombic and monoclinic lattices tend to have considerable in-plane LD,while their hexagonal counterparts are optically isotropic.Specifically,or-thorhombic 2D semiconductors possess larger in-plane LD because their intrinsic mirror planes in the lattice induce in-plane parity of the wavefunctions at the band edges.The decision tree algorithm further reveals that in-plane LD is also related to the difference for the a and b lattice constants and the electronegativity difference between the cation and anion.In addition,heterostructures formed from these 2D semiconductors exhibit high light absorption,strong in-plane LD,and various types of band alignment.The result of our study can promote the application and development of 2D semiconductors in polarization optoelectronics.

    A 3D MCAM architecture based on flash memory enabling binary neural network computing for edge AI

    Maoying BAIShuhao WUHai WANGHua WANG...
    298-306页
    查看更多>>摘要:The in-memory computing(IMC)architecture implemented by non-volatile memory units shows great possibilities to break the traditional von Neumann bottleneck.In this paper,a 3D IMC architecture is proposed whose unit is based on a multi-bit content-addressable memory(MCAM).The MCAM unit is com-prised of two 65 nm flash memory and two transistors(2Flash2T),which is reconfigurable and multifunctional for both data write/search and XNOR logic operation.Moreover,the MCAM array can also support the population count(POPCOUNT)operation,which can be beneficial for the training and inference process in binary neural network(BNN)computing.Based on the well-known MNIST dataset,the proposed 3D MCAM architecture shows a 98.63%recognition accuracy and a 300%noise-tolerant performance without significant accuracy deterioration.Our findings can provide the potential for developing highly energy-efficient BNN computing for complex artificial intelligence(AI)tasks based on flash-based MCAM units.

    Lattice-based access authentication scheme for quantum communication networks

    Min WANGGui-Lu LONG
    307-313页
    查看更多>>摘要:Access authentication scheme plays a foundational role in ensuring the security of communica-tion networks.However,an access authentication scheme with high security and efficiency is still lacking in quantum communication networks.In this paper,we propose a lattice-based access authentication scheme for quantum communication networks in the manner of real-time interaction with the network control center,which could achieve properties of mutual authentication,conditional anonymity,data confidentiality,unforge-ability,undeniability,and data integrity.We utilize the digital signature algorithm CRYSTALS-Dilithium and the key-establishment algorithm CRYSTALS-KYBER,both of which have been selected for standard-ization by the National Institute of Standards and Technology,to realize secure access authentication for users of the quantum communication networks.Specifically,in the quantum secure direct communication network,key-establishment is replaced by the verification of signatures encoded in quantum states.Our results demonstrate the feasibility of establishing a quantum-secure communication network.

    Ground-to-air wireless coverage extension for 6G:a triangular prism structure-based approach

    Junyu LIUMin SHENGJiandong LIXuhui CHEN...
    314-316页

    Multi-dimensional ability diagnosis for machine learning algorithms

    Qi LIUZheng GONGZhenya HUANGChuanren LIU...
    317-318页

    DcnnGrasp:towards accurate grasp pattern recognition with adaptive regularizer learning

    Xiaoqin ZHANGZiwei HUANGJingjing ZHENGShuo WANG...
    319-320页

    Mean-square prescribed finite-time output consensus of high-order linear multi-agent systems

    Qingpeng LIANGDeqing HUANGLei MAJiangping HU...
    321-322页

    Controllability of neighborhood Corona product networks

    Bo LIUXuan LIQiang ZHANGJunjie HUANG...
    323-324页

    Game-based computation offloading and resource allocation in stochastic geometry-modeling vehicular networks

    Jianjie YANGZhijian LINYingyang CHENXiaoqiang LU...
    325-326页

    What is the optimal inter-site distance in multi-BS cooperative sensing?

    Zhichu RENYiming YUHong RENCunhua PAN...
    327-328页