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Nearly universal and efficient quantum secure multi-party computation protocol

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The Journal of China Universities of Posts and Telecommunications 2022年第4期29卷 51-68,88页

作者： Han Yushan Che Bichen Liu Jiali dou zhao Di Junyu State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China School of Cyberspace Security Beijing University of Posts and TelecommunicationsBeijing 100876China

Universality is an important property in software and hardware *** paper concentrates on the universality of quantum secure multi-party computation(SMC)*** of all,an in-depth study of universality has been conducted,and then a nearly universal protocol is proposed by using the Greenberger-Horne-Zeilinger(GHZ)-like state and stabilizer *** protocol can resolve the quantum SMC problem which can be deduced as modulo subtraction,and the steps are simple and ***,three quantum SMC protocols based on the proposed universal protocol:Quantum private comparison(QPC)protocol,quantum millionaire(QM)protocol,and quantum multi-party summation(QMS)protocol are *** protocols are given as examples to explain ***,analyses of the example protocols are ***,the correctness,fairness,and efficiency are *** the proposed universal protocol meets security from the perspective of preventing inside attacks and outside ***,the experimental results of the example protocols on the International Business Machines(IBM)quantum platform are consistent with the theoretical *** research indicates that our protocol is universal to a certain degree and easy to perform.

关键词： universality quantum secure multi-party computation security Greenberger-Horne-Zeilinger-like state simple operation

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

Verifiable Multi-Party Universal Blind Quantum Computing in Distributed Networks

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Chinese Journal of Electronics 2021年第4期30卷 712-718页

作者： SHAN Ruiting CHEN Xiubo XU Gang dou zhao LI Zongpeng MIAO Lihua YANG Yixian Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications School of Information Science and Technology North China University of Technology Huawei Technologies Co.Ltd School of Computer Science Wuhan University

Blind quantum computing(BQC) ensures that a classical client could delegate complex computing tasks to a remote quantum server safely. In order to detect the dishonest behavior of the participants, we present a verifiable multi-party universal BQC protocol in distributed networks. By using the stabilizer formalism, we propose an honesty check method to test the correctness of the graph states generated by the servers. The honesty of both the clients and the servers can be judged fairly with the help of the arbitrator. Moreover, a load balancer is introduced to control the possible breakdown of servers in the network. No-signaling principle ensures the unconditional security of the protocol. Through the use of universal resource states, our protocol can be applied in more multi-party verifiable universal BQC *** failure management and workload balancing of the protocol also provide a promising prospect for the future BQC network.

关键词： Blind quantum computing(BQC) Verifiability Failure management Load balancer Distributed networks

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高铁路基小角度跨越既有浅埋隧道工程对策

铁道工程学报 2024年第8期41卷 39-44页

作者：赵斗中国铁路设计集团有限公司天津300308

研究目的:高速铁路以路基形式小角度跨越既有铁路隧道浅埋段,为避免新建铁路路基荷载、施工时机械振动及后期运营等对既有铁路隧道产生不利影响,开展相关研究,评价其影响程度,优化路基结构,提出运营监测方案,对设计施工提出指导性意见,... 详细信息

研究目的:高速铁路以路基形式小角度跨越既有铁路隧道浅埋段,为避免新建铁路路基荷载、施工时机械振动及后期运营等对既有铁路隧道产生不利影响,开展相关研究,评价其影响程度,优化路基结构,提出运营监测方案,对设计施工提出指导性意见,对于保障高铁和既有铁路运营安全具有重要意义。研究结论:(1)研究提出高速铁路跨越既有铁路隧道影响评价方法、控制指标、评价参数;(2)研究开展常规路基设计方案对既有铁路影响分析,结果表明既有铁路隧道结构受力接近限值水平,安全储备不足;(3)研究提出U形槽内浇筑轻质混凝土轻型结构设计方案和静力碾压措施,较常规路基设计方案,对既有铁路隧道衬砌受力影响优化幅度达30%~50%;(4)研究提出包括监测范围、内容、布设要求、频率、预警阈值等的全站仪自动化监测方案;(5)本研究成果可为其他新建铁路跨越既有铁路工程提供借鉴。

关键词：高速铁路路基小角度跨越既有铁路浅埋隧道工程对策

Efficient quantum private comparison protocol based on one direction discrete quantum walks on the circle

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Chinese Physics B 2022年第5期31卷 150-156页

作者： Jv-Jie Wang zhao dou Xiu-Bo Chen Yu-Ping Lai Jian Li Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing 100876China Information Security Center School of Cyberspace SecurityBeijing University of Posts and TelecommunicationsBeijing 100876China

We propose an efficient quantum private comparison protocol firstly based on one direction quantum *** the help of one direction quantum walk,we develop a novel method that allows the semi-honest third party to set a flag to judge the comparing result,which improves the qubit efficiency and the maximum quantity of the participants’secret ***,our protocol can judge the size of the secret messages,not only ***,the quantum walks particle is disentangled in the initial *** only requires a quantum walks operator to move,making our proposed protocol easy to implement and reducing the quantum *** security analysis,we prove that our protocol can withstand well-known attacks and brute-force *** also reveal that our protocol is correct and practical.

关键词： quantum private comparison protocol one direction quantum walks efficiency brute-force attack

Constructing the three-qudit unextendible product bases with strong nonlocality

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Chinese Physics B 2022年第6期31卷 170-182页

作者： Bichen Che zhao dou Xiubo Chen Yu Yang Jian Li Yixian Yang Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing 100876China Information Security Center Beijing University of Posts and TelecommunicationsBeijing 100876China

Unextendible product bases(UPBs)are interesting members of a family of orthogonal product ***,we investigate the construction of 3-qudit UPBs with strong ***,a UPB set in C^(3)■C^(3)■C^(3)of size 19 is presented based on the shift *** mapping the system to a Rubik’s cube,we provide a general method of constructing UPBs in C^(d)■C^(d)■C^(d)of size(d-1)^(3)+2d+5,whose corresponding Rubik’s cube is composed of four ***,for the more general case where the dimensions of parties are different,we extend the classical tile structure to the 3-qudit system and propose the tri-tile *** means of this structure,a C^(4)■C^(4)■C^(5)system of size 38 is obtained based on a C^(3)■C^(3)■C^(4)system of size ***,we generalize this approach to the C^(d1)■C^(d2)■C^(d3)system which also consists of four *** research provides a positive answer to the open question raised in by Halder et al.[***.122040403(2019)],indicating that there do exist UPBs that can exhibit strong quantum nonlocality without entanglement.

关键词： strong nonlocality unextendible product bases tri-tile structure construction method

A rational quantum state sharing protocol with semi-off-line dealer

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Chinese Physics B 2022年第5期31卷 157-164页

作者： Hua-Li Zhang Bi-Chen Che zhao dou Yu Yang Xiu-Bo Chen Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing 100876China School of Cyberspace Security Beijing University of Posts and TelecommunicationsBeijing 100876China

A rational quantum state sharing protocol with the semi-off-line dealer is ***,the dealer Alice shares an arbitrary two-particle entangled state with the players by Einstein-Podolsky-Rosen(EPR)pairs and Greenberger-Horne-Zeilinger(GHZ)*** EPR pairs are prepared by Charlie instead of the dealer,reducing the workload of the ***,all players have the same probability of reconstructing the quantum state,guaranteeing the fairness of the *** addition,the dealer is semi-off-line,which considerably reduces the information exchanging between the dealer and the ***,our protocol achieves security,fairness,correctness,and strict Nash equilibrium.

关键词： rational quantum state sharing game theory semi-off-line Nash equilibrium

Effect of dimensional expansion on carrier transport behaviors of the hexagonal Bi-based perovskite crystals

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Journal of Energy Chemistry 2022年第3期31卷 459-465,I0013页

作者： Qihao Sun Bao Xiao Leilei Ji dou zhao Jinjin Liu Wei Zhang Menghua Zhu Wanqi Jie Bin-Bin Zhang Yadong Xu State Key Laboratory of Solidification Processing&Key Laboratory of Radiation Detection Materials and Devices MIITSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072ShaanxiChina College of Chemistry Nankai UniversityTianjin 300071China School of Microelectronics Xidian UniversityXi’an 710072ShaanxiChina

All-inorganic Cs_(3)Bi_(2)I_(9)(CBI)halide perovskites are sought to be candidate for photoelectrical materials because of their low toxicity and satisfactory ***,the discrete molecular[Bi2I9]3−clusters limit the charge-transport ***,the defect halide perovskite based on trivalent Bi^(3+)is expanded to Cs_(3)Bi_(2)I_(6)Br_(3)(CBIB).Centimeter-size CBIB single crystal(Φ15×70 mm^(3))was grown by the vertical Bridgeman *** powder X-ray diffraction analysis shows that CBIB has structure with lattice parameters of a=b=8.223Å,c=10.024Å,α=β=90°andγ=120°.The density functional theory(DFT)calculations demonstrate that the charge density distribution was enhanced after the dimensional *** enhancement of carrier transport ability of(00l)in-plane is characterized before and after dimensional *** obtained CBIB(001)exhibited an electron mobility up to 40.03 cm^(2)V^(−1)s^(−1)by time-of-flight(TOF)technique,higher than 26.46 cm^(2)V^(−1)s^(−1)of CBI(001).Furthermore,the X-ray sensitivity increases from 707.81μC Gy^(−1)cm^(−2)for CBI(001)to 3194.59μC Gy−1 cm^(−2)for CBIB(001).This research will deepen our understanding of Bi-based perovskite materials and afford more promising strategies for lead-free perovskite optoelectronic devices modification.

关键词： Bi-based perovskite Dimensional expansion Carrier transport Bridgeman method Radiation detection

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重载铁路隧道坡度折减探讨

铁道工程学报 2016年第6期33卷 88-92,98页

作者：赵斗铁道第三勘察设计院集团有限公司天津300142

研究目的:合理确定重载铁路隧道坡度折减取值,能够显著减少工程投资,对于减少越岭地段隧道长度、降低施工风险和施工难度都意义重大。本文结合重载铁路特点,对重载铁路隧道坡度折减取值进行计算分析,并同普通铁路进行对比;同时,对于取... 详细信息

研究目的:合理确定重载铁路隧道坡度折减取值,能够显著减少工程投资,对于减少越岭地段隧道长度、降低施工风险和施工难度都意义重大。本文结合重载铁路特点,对重载铁路隧道坡度折减取值进行计算分析,并同普通铁路进行对比;同时,对于取消隧道坡度折减的可行性,从理论计算和运营实际进行分析,最终提出隧道坡度折减取值建议。研究结论:(1)重载铁路按现行《线规》规定的坡度折减系数来计算隧道内因空气阻力引起的坡度折减值不尽合理,宜结合设计线路的具体条件,根据隧道内附加空气阻力值计算确定;(2)对于地形困难地段,为显著节省投资,经综合技术经济比选,隧道内可考虑坡度少折减或不折减;(3)该研究结论可为重载铁路隧道坡度折减设计取值提供参考。

关键词：重载铁路隧道坡度折减