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A secure rational quantum state sharing protocol

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Science China(Information Sciences) 2018年第2期61卷 204-215页

作者： Zhao DOU gang xu Xiu-Bo CHEN Xin LIU Yi-xian YANG Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications School of Software Engineering Beijing University of Posts and Telecommunications School of Information Engineering Inner Mongolia University of Science and Technology School of Computer Science Shaanxi Normal University Gui Zhou University Guizhou Provincial Key Laboratory of Public Big Data

A novel rational protocol to share two arbitrary qubits among multiple parties is investigated in this paper. First, the protocol is presented, which is learned from Li et al.’s protocol. Second, the utility,security, correctness, fairness, Nash equilibrium, and Pareto optimality of our scheme are discussed in detail,where the utility, correctness, and fairness of rational quantum state sharing protocols are creatively given because the agent who recovers the state plays a different and more important role. Another important point is that assumptions about our protocol are more practical and suitable than existing protocols.

关键词： rational quantum state sharing Nash equilibrium secure correct

Photonic quantum network transmission assisted by the weak cross-Kerr nonlinearity

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Science China(Physics,Mechanics & Astronomy) 2018年第6期61卷 8-23页

作者： Feng Wang Ming-Xing Luo gang xu Xiu-Bo Chen Yi-xian Yang College of Mathematical Sciences Dezhou University Information Security and National Computing Grid Laboratory Southwest Jiaotong University School of Software Engineering Beijing University of Posts and Telecommunications Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Classical network coding permits all internal nodes to encode or decode the incoming messages over proper fields in order to complete a network multicast. Similar quantum encoding scheme cannot be easily followed because of various quantum no-go theorems. In this paper, to avoid these theorems in quantum multiple-source networks, we present a photonic strategy by exploring quantum transferring approaches assisted by the weak cross-Kerr nonlinearity. The internal node may nearly deterministically fuse all incoming photons into a single photon with multiple modes. The fused single photon may be transmitted using twophotonic hyperentanglement as a quantum resource. The quantum splitting as the inverse operation of the quantum fusion allows forwarding quantum states under the quantum no-cloning theorem. Furthermore, quantum addressing schemes are presented to complete the quantum transmissions on multiple-source networks going beyond the classical network broadcasts or quantum n-pair transmissions in terms of their reduced forms.

关键词： photonic network transmission quantum fusion quantum teleportation cross-Kerr nonlinearity

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Structure Effect of Squarylium Cyanine Dyes on Third-Order Optical Nonlinearities in Ground and Excited States

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Chinese Physics Letters 1999年第8期16卷 571-573页

作者： IU xu-chun xu gang SI Jin-hai YE Pei-xian LIN Tong PENG Bi-xian Institute of Physics and Center for Condensed Matter Physics Chinese Academy of SciencesBeijing 100080 Institute of Photographic Chemistry Chinese Academy of SciencesBeijing 100101

A series of squarylium cyanine dyes with different substituents were synthesized and the third-order optical nonlinearities of their ground and excited states were investigated by backward degenerate *** the ground state,the molecular hyperpolarizabilityγg increases with the red-shift of the absorption peakλabmax,of the squaraine with different substituents,whereas for the excited-state molecular hyperpolarizabilityγe,the nonlinear enhancementγe/γg decreases,which may indicate that in the excited state the electron accepting-donating ability of different substituents changes in the reverse order compared with the order in the ground state.

关键词： state excited substituent

Highly selective electrocatalytic Cl− oxidation reaction by oxygen-modified cobalt nanoparticles immobilized carbon nanofibers for coupling with brine water remediation and H2 production

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Nano Research 2021年第5期14卷 1443-1449页

作者： Qizhong Xiong xian Zhang Qipeng Cheng Guoqiang Liu gang xu Junli Li Xinxin Ye Hongjian Gao Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention School of Resources and EnvironmentAnhui Agricultural UniversityHefei230036China Key Laboratory of Materials Physics Centre for Environmental and Energy NanomaterialsAnhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei230031China School of Materials Science and Engineering Hefei University of TechnologyHefei230009China

Combining the H2 production with brine remediation is regarded as a sustainable approach to achieving clean H2 energy. However, designing stable Cl− oxidation reaction (COR) electrocatalyst is the key to realize this route. Herein, a type of oxygen-modified Co nanoparticles anchored graphitic carbon nanofibers catalyst (Co/GCFs) was synthesized through a two-step strategy of adsorption and pyrolysis. The Co/GCFs-2.4 exhibits high selectivity and stability for COR at neutral electrolyte. It is worth noting that unlike the water oxidation, the chemical valence of cobalt has not changed during the COR. Further results demonstrated that the oxygen-modified Co nanoparticles provide active sites for selective COR, meanwhile, the graphitic carbon gives rise to strong catalytic stability. Thanks to the superior COR and H2 production activity of Co/GCFs-2.4, a two-electrode brine electrocatalysis system employing Co/GCFs-2.4 as both cathode and anode for H2 production exhibited robust stability, efficient and high Faraday efficiency (98%-100%). We propose that this work provides a novel strategy for designing efficient and stable catalysts with electrocatalytic COR and HER activities at neutral brine water for practically coupling with H2 production by water electrolysis and brine water remediation.

关键词： carbon nanofibers oxygen-modified cobalt nanoparticles brine water Cl−oxidation reaction electrocatalytic H2 production

How to build a habitable planet:an interview with Charles H. Langmuir

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National Science Review 2024年第6期11卷 76-80页

作者： Yi-gang xu the Guangzhou Institute of Geochemistry Chinese Academy of Sciences

Earth is the only known habitable planet in the solar system. Understanding how Earth developed its unique habitability has been the frontier of Earth sciences and has become one of the main themes of current deep-space explorations. What are the decisive factors that led to a habitable planet? What is the role of solid Earth processes in the origin of life and in modulating the surface environment? Are Earth’s habitability studies relevant to current challenges that human beings face? These questions have attracted the interest of both scientists and the public alike.

关键词： Earth (planet)

Current Research Trends and Perspectives on Solid-State Nanomaterials in Hydrogen Storage

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Research 2021年第1期2021卷 125-163页

作者： Jie Zheng Chen-gang Wang Hui Zhou Enyi Ye Jianwei xu Zibiao Li xian Jun Loh Institute of Materials Research and Engineering A^(∗)STAR(Agency for Science Technology and Research)2 Fusionopolis WayInnovis#08-03SingaporeSingapore 138634

Hydrogen energy,with environment amicable,renewable,efficiency,and cost-effective advantages,is the future mainstream substitution of fossil-based ***,the extremely low volumetric density gives rise to the main challenge in hydrogen storage,and therefore,exploring effective storage techniques is key hurdles that need to be crossed to accomplish the sustainable hydrogen *** physically or chemically stored into nanomaterials in the solid-state is a desirable prospect for effective large-scale hydrogen storage,which has exhibited great potentials for applications in both reversible onboard storage and regenerable off-board storage *** attractive points include safe,compact,light,reversibility,and efficiently produce sufficient pure hydrogen fuel under the mild *** review comprehensively gathers the state-of-art solid-state hydrogen storage technologies using nanostructured materials,involving nanoporous carbon materials,metal-organic frameworks,covalent organic frameworks,porous aromatic frameworks,nanoporous organic polymers,and nanoscale *** describes significant advances achieved so far,and main barriers need to be surmounted to approach practical applications,as well as offers a perspective for sustainable energy research.

关键词： mounted attractive substitution

Optical and Structural Properties of AP-MOVPE GaInP/GaAs Heterostructures

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Chinese Physics Letters 1994年第12期11卷 778-781页

作者： REN Hongwen HUANG Bolin xu xian'gang JIANG Minhua ZHENG Wanhua xu Junying ZHUANG Wanru Institute of Crystal Materials Shandong UniversityJinan 250100 National Laboratory of Integrated Optoelectronics Institute of SemiconductorsAcademia SinicaBeijing 100083

Lattice matched GaInP/GaAs heterostructures were grown by atmospheric pressuremetal organic vapor phase epitaxy(AP-MOVPE).Compositional intermixing of As/P and Ga/In near the heterointerfaces was studied by photoluminescence(PL)*** segregation,memory effect of In into GaAs and the carry-over of As in the GaInP layer during the growth process were considered as three major factors giving rise to the anomalous emissions in the PL *** thermal annealing and zinc doping strongly enhanced the compositional interdiffusion near the heterointerfaces.

关键词： GaInP/GaAs MOVPE matched

Fe_(0.02)/Ag_(x)-ZnO复合材料的合成及其光催化活性

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陕西科技大学学报 2025年第1期43卷 88-100页

作者：王远港王有杰孙铖赵显一渤海大学化学与材料工程学院辽宁锦州121013 锦州晨晟科技有限公司辽宁锦州121013

采用水热合成法及煅烧法,制备了不同掺杂量的Fe_(0.02)/Ag_(x)-ZnO复合材料,并考察了各催化剂对RhB光催化降解活性.机理分析表明,Fe掺杂进ZnO,Fe^(3+)可以形成陷阱捕获e-,导致ZnO的导带下方形成一个Fe掺杂能级,促使缩短了ZnO的带隙,扩... 详细信息

采用水热合成法及煅烧法,制备了不同掺杂量的Fe_(0.02)/Ag_(x)-ZnO复合材料,并考察了各催化剂对RhB光催化降解活性.机理分析表明,Fe掺杂进ZnO,Fe^(3+)可以形成陷阱捕获e-,导致ZnO的导带下方形成一个Fe掺杂能级,促使缩短了ZnO的带隙,扩大了光谱响应范围;Ag的掺入促使部分电子(e^(-))跃迁到Ag单质上,减小了禁带宽度,降低了电子跃迁所需的能量,抑制了e^(-)-h^(+)的复合,Fe_(0.02)/Ag_(x)-ZnO样品的新费米能级低于Fe-ZnO和ZnO的导带能级,导致其界面处的电荷分离;进一步研究Fe_(0.02)/Ag_(x)-ZnO复合材料对染料罗丹明B(Rhodamine B,RhB)的光催化降解性能和循环使用性能.结果表明,Fe_(0.02)/Ag_(x)-ZnO复合材料可作为一种稳定、高效且可循环的光催化剂材料并用于污水处理,拓展了Fe_(0.02)/Ag_(x)-ZnO复合材料的应用.

关键词：电子跃迁费米能级禁带宽带光催化

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A multiaxial lead-free two-dimensional organic-inorganic perovskite ferroelectric

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National Science Review 2021年第5期8卷 140-146页

作者： Chao-Ran Huang xuzhong Luo Xiao-gang Chen xian-Jiang Song Zhi-xu Zhang Ren-Gen Xiong Key Laboratory of OrganoPharmaceutical Chemistry of Jiangxi Province College of Chemistry and Chemical EngineeringGannan Normal University Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics Southeast University

Two-dimensional(2 D) hybrid organic-inorganic perovskites(HOIPs) have recently gained tremendous interest because of their unique features in contrast to three-dimensional counterparts and traditional 2 D materials. However, although some 2 D HOIP ferroelectrics have been achieved, the issue of toxic Pb and uniaxial nature impede their further application. Herein, for the first time, we report a lead-free 2 D HOIP multiaxial ferroelectric, [3,3-difluorocyclobutylammonium]2CuCl4(1), which shows four ferroelectric axes and eight equivalent polarization directions, more than those of the other 2 D HOIP ferroelectrics and even the inorganic perovskite ferroelectric BaTiO3(three ferroelectric axes and six equivalent polarization directions). 1 also features a high Curie temperature of 380 K and exhibits remarkable thermochromism of color change from green-yellow to dark brown. To our knowledge, 1 is the first multiaxial lead-free2 D HOIP ferroelectric. This work sheds light on the exploration of better lead-free 2 D HOIP ferroelectrics.

关键词： ferroelectrics organic-inorganic perovskites multiaxial ferroelectrics Curie temperature thermochromism