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Towards an efficient variational quantum algorithm for solving linear equations

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Communications in Theoretical Physics 2024年第11期76卷 54-65页

作者： WenShan Xu ri-gui zhou YaoChong Li XiaoXue Zhang College of Information Engineering Shanghai Maritime UniversityShanghai 201306China Research Center of Intelligent Information Processing and Quantum Intelligent Computing Shanghai 201306China

Variational quantum algorithms are promising methods with the greatest potential to achieve quantum advantage,widely employed in the era of noisy intermediate-scale quantum *** study presents an advanced variational hybrid algorithm(EVQLSE)that leverages both quantum and classical computing paradigms to address the solution of linear equation ***,an innovative loss function is proposed,drawing inspiration from the similarity measure between two quantum *** function exhibits a substantial improvement in computational complexity when benchmarked against the variational quantum linear ***,a specialized parameterized quantum circuit structure is presented for small-scale linear systems,which exhibits powerful expressive *** rigorous numerical analysis,the expressiveness of this circuit structure is quantitatively assessed using a variational quantum regression algorithm,and it obtained the best score compared to the ***,the expansion in system size is accompanied by an increase in the number of parameters,placing considerable strain on the training process for the *** address this challenge,an optimization strategy known as quantum parameter sharing is introduced,which proficiently minimizes parameter volume while adhering to exacting precision ***,EVQLSE is successfully implemented on a quantum computing platform provided by IBM for the resolution of large-scale problems characterized by a dimensionality of 220.

关键词： quantum computing variational quantum algorithm systems of linear equations parameterized quantum circuit

Novel quantum secret image-sharing scheme

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Chinese Physics B 2019年第4期28卷 61-69页

作者： Gao-Feng Luo ri-gui zhou Wen-Wen Hu College of Information Engineering Shanghai Maritime University College of Information Engineering Shaoyang University Research Center of Intelligent Information Processing and Quantum Intelligent Computing

In this paper, we propose a novel quantum secret image-sharing scheme which constructs m quantum secret images into m+1 quantum share images. A chaotic image generated by the logistic map is utilized to assist in the construction of quantum share images first. The chaotic image and secret images are expressed as quantum image representation by using the novel enhanced quantum representation. To enhance the confidentiality, quantum secret images are scrambled into disordered images through the Arnold transform. Then the quantum share images are constructed by performing a series of quantum swap operations and quantum controlled-NOT operations. Because all quantum operations are invertible, the original quantum secret images can be reconstructed by performing a series of inverse operations. Theoretical analysis and numerical simulation proved both the security and low computational complexity of the scheme, which has outperformed its classical counterparts. It also provides quantum circuits for sharing and recovery processes.

关键词： quantum image processing secret image sharing quantum computation quantum circuit

Quantum watermarking based on threshold segmentation using quantum informational entropy

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Chinese Physics B 2022年第4期31卷 116-122页

作者： Jia Luo ri-gui zhou Wen-Wen Hu YaoChong Li Gao-Feng Luo College of Information Engineering Shanghai Maritime UniversityShanghai 201306China Research Center of Intelligent Information Processing and Quantum Intelligent Computing Shanghai 201306China College of Information Engineering Shaoyang UniversityShaoyang 422000China

We propose a new quantum watermarking scheme based on threshold selection using informational entropy of quantum *** core idea of this scheme is to embed information into object and background of cover image in different ***,a threshold method adopting the quantum informational entropy is employed to determine a threshold *** threshold value can then be further used for segmenting the cover image to a binary image,which is an authentication key for embedding and extraction *** a careful analysis of the quantum circuits of the scheme,that is,translating into the basic gate sequences which show the low complexity of the *** of the simulation-based experimental results is entropy difference which measures the similarity of two images by calculating the difference in quantum image informational entropy between watermarked image and cover ***,the analyses of peak signal-to-noise ratio,histogram and capacity of the scheme are also provided.

关键词： quantum image watermarking threshold segmentation quantum informational entropy quantum circuit

Quantum color image scaling based on bilinear interpolation

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Chinese Physics B 2023年第5期32卷 235-244页

作者：高超周日贵李鑫 College of Information Engineering Shanghai Maritime UniversityShanghai 201306China Research Center of Intelligent Information Processing and Quantum Intelligent Computing Shanghai 201306China

As a part of quantum image processing, quantum image scaling is a significant technology for the development of quantum computation. At present, most of the quantum image scaling schemes are based on grayscale images, with relatively little processing for color images. This paper proposes a quantum color image scaling scheme based on bilinear interpolation, which realizes the 2^(n_(1)) × 2^(n_(2)) quantum color image scaling. Firstly, the improved novel quantum representation of color digital images(INCQI) is employed to represent a 2^(n_(1)) × 2^(n_(2)) quantum color image, and the bilinear interpolation method for calculating pixel values of the interpolated image is presented. Then the quantum color image scaling-up and scaling-down circuits are designed by utilizing a series of quantum modules, and the complexity of the circuits is ***, the experimental simulation results of MATLAB based on the classical computer are given. The ultimate results demonstrate that the complexities of the scaling-up and scaling-down schemes are quadratic and linear, respectively, which are much lower than the cubic function and exponential function of other bilinear interpolation schemes.

关键词： quantum image processing image scaling quantum image representation bilinear interpolation

Integer multiple quantum image scaling based on NEQR and bicubic interpolation

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Chinese Physics B 2024年第4期33卷 259-273页

作者：蔡硕周日贵罗佳陈思哲 College of Information Engineering Shanghai Maritime UniversityShanghai 201306China Research Center of Intelligent Information Processing and Quantum Intelligent Computing Shanghai 201306China College of Merchant Marine Shanghai Maritime UniversityShanghai 201306China School of Mathematics and Computational Science Shangrao Normal UniversityShangrao 334001China

As a branch of quantum image processing,quantum image scaling has been widely ***,most of the existing quantum image scaling algorithms are based on nearest-neighbor interpolation and bilinear interpolation,the quantum version of bicubic interpolation has not yet been *** this work,we present the first quantum image scaling scheme for bicubic interpolation based on the novel enhanced quantum representation(NEQR).Our scheme can realize synchronous enlargement and reduction of the image with the size of 2^(n)×2^(n) by integral ***,the image is represented by NEQR and the original image coordinates are obtained through multiple CNOT ***,16 neighborhood pixels are obtained by quantum operation circuits,and the corresponding weights of these pixels are calculated by quantum arithmetic ***,a quantum matrix operation,instead of a classical convolution operation,is used to realize the sum of convolution of these *** simulation experiments and complexity analysis,we demonstrate that our scheme achieves exponential speedup over the classical bicubic interpolation algorithm,and has better effect than the quantum version of bilinear interpolation.

关键词： quantum image processing image scaling bicubic interpolation quantum circuit

Leaching of WO_(3)from sulfuric acid converted product of scheelite in NH_(3)·H_(2)O−NH_(4)HCO_(3)solution

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中国有色金属学报 2025年第1期35卷 326-337页

作者： Lei-ting SHEN Yu LIU Juan-lang GUO Qiu-sheng zhou Tian-gui QI Zhi-hong PENG gui-hua LIU Xiao-bin LI School of Metallurgy and Environment Central South UniversityChangsha 410083China

The leaching of sulfuric acid converted product of scheelite in NH_(3)·H_(2)O−NH_(4)HCO_(3)solution was systemically studied to improve sulfuric acid conversion−ammonium salts leaching technology route for ammonium paratungstate *** results showed that the WO_(3)leaching efficiency was about 99%under optimal conditions of 350 r/min,liquid-to-solid ratio of 3 mL/g,1 mol/L NH_(4)HCO_(3),4 mol/L NH_(3)·H_(2)O,25℃,and 15 *** the leaching,CaSO_(4)almost had no change and was still in a banding or rod-like shape in short leaching time,while conglobate CaCO_(3)was gradually formed on the CaSO_(4)surface.A secondary reaction might occur between CaSO_(4)and WO_(4)^(2−),which could be restrained by a certain amount of CO_(3)^(2−)in the *** was no CaCO_(3)phase determined by XRD in leaching residue of converted product for scheelite concentrate under optimal conditions,which was different from that for synthetic *** leaching process could be explained by neutralization reaction of H_(2)WO_(4)and solid transformation of CaSO_(4)in NH_(3)·H_(2)O−NH_(4)HCO_(3)solution.

关键词： tungstic acid calcium sulfate leaching mechanism calcium carbonate ammonium tungstate

I_(2)-DMSO mediated tetra-functionalization of enaminones for the construction of novel furo[2,3:4,5]pyrimido[1,2-b]indazole skeletons via in situ capture of ketenimine cations

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Chinese Chemical Letters 2025年第1期36卷 277-282页

作者： You zhou Li-Sheng Wang Shuang-gui Lei Bo-Cheng Tang Zhi-Cheng Yu Xing Li Yan-Dong Wu Kai-Lu Zheng An-Xin Wu National Key Laboratory of Green Pesticide International Joint Research Center for Intelligent Biosensor Technology and HealthCollege of ChemistryCentral China Normal UniversityWuhan 430079China Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs The First Dongguan Affiliated HospitalSchool of PharmacyGuangdong Medical UniversityDongguan 523808China State Key Laboratory of Chemical Biology and Drug Discovery Department of Applied Biology and Chemical TechnologyThe Hong Kong Polytechnic UniversityHong Kong SAR 999077China

The first-ever synthesis of the unknown furo[2,3:4,5]pyrimido[1,2-b]indazole skeleton was demonstrated based on the undiscovered tetra-functionalization of enaminones,with simple substrates and reaction *** key to realizing this process lies in the multiple trapping of the in situ generated ketenimine cation by the 3-aminoindazole,which results in the formation of four new chemical bonds and two new rings in one ***,the products of this new reaction were found to exhibit aggregationinduced emission(AIE)without modification.

关键词： Unknown skeleton Tetra-functionalization Ketenimine cations Aggregation-induced emission

Ecological security pattern construction using landscape ecological quality:A case study of Yanchi County,northern China

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Journal of Arid Land 2025年第1期17卷 19-42页

作者： LI Junhao WANG Ya SHI gui PEI Xiaodong ZHANG Cong zhou Lihua YANG Guojing Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Institutes of Science and Development Chinese Academy of SciencesBeijing 100190China

Ecological security patterns are paramount to the advancement of an ecological civilization in China,aiming to enhance the stability and service functions of ecosystems to achieve sustainable regional ***,current regional ecological protection efforts have not been effectively integrated into the regional development planning of ecological security *** study systematically assessed the effectiveness of ecological protection projects in Yanchi County,Ningxia Hui Autonomous Region,China,through the evaluation of landscape ecological *** on the evaluation results of landscape ecological quality,this study used morphological pattern analysis(MSPA),minimum cumulative resistance(MCR)model,and gravity model together to construct the ecological security pattern of Yanchi *** findings revealed that from 1990 to 2020,with the implementation of ecological protection projects started from 2000,the landscape stability of Yanchi County first decreased and then increased,and the intensity of landscape disturbance first intensified but then decreased,indicating an improvement in the landscape ecological quality and a significant enhancement of the ecological environment in Yanchi *** ecological security pattern of Yanchi County consisted of 10 ecological sources,10 ecological source points,23 ecological corridors,and 27 ecological *** ecological security pattern of Yanchi County exhibited distinct spatial variations,with stronger ecological security observed in the southern part than in northern part of the *** ecological sources were denser in the southern part than in the northern part of the county,and accordingly,the length of ecological corridors was shorter and denser in the southern than that in the northern part of the *** on the spatial distribution of landscape ecological quality and the characteristics of ecological security pattern of Yanchi County in 2020,we suggested Yanchi County to build four zon

关键词： landscape ecological quality landscape stability landscape disturbance ecological network ecological source ecological corridor farming-pastoral area

同一性到复数性:智能时代教师发展的行动路向

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电化教育研究 2025年第1期46卷 115-121页

作者：周桂南京师范大学道德教育研究所江苏南京210097

强国必先强教,强教必先强师,教师队伍建设在教育事业发展中占有基础性、全局性地位。在教育数字化转型背景下,人工智能赋能教师发展存在潜在的同一性危机,具体表征为:技术的自主性逻辑宰制了教师的思想,诱使教师成为无思想的劳动动物;... 详细信息

强国必先强教,强教必先强师,教师队伍建设在教育事业发展中占有基础性、全局性地位。在教育数字化转型背景下,人工智能赋能教师发展存在潜在的同一性危机,具体表征为:技术的自主性逻辑宰制了教师的思想,诱使教师成为无思想的劳动动物;技术的自动化过程强化了教师的工具性思维,扩大了教师工作的无意义性;技术理性的过度扩张僭越了教师的价值理性,削弱了教师行动的责任伦理。为应对同一性的困境,亟须寻求智能时代教师发展复数性的特质定位,具体体现为教师是行动的主体、教师言说的教育性以及教师行动的开创性。基于此,明晰智能时代教师发展的行动路向至关重要。这一行动路向建基于智能时代教师发展的目的、过程与基石,具体呈现为追寻幸福、开启行动以及进行反思。

关键词：人工智能教师发展同一性复数性行动

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