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Experimental preparation of topologically ordered states via adiabatic evolution

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Science China(Physics,Mechanics & Astronomy) 2019年第8期62卷 39-45页

作者： zhihuang luo Jun Li ZhaoKai Li Ling-Yan Hung Yi Dun Wan XinHua Peng JiangFeng Du Beijing Computational Science Research Center CAS Key Laboratory of Microscale Magnetic Resonance and Department of Modern Physics University of Science and Technology of China Department of Physics and Institute for Quantum Science and Engineering Southern University of Science and Technology State Key Laboratory of Surface Physics and Department of Physics Fudan University Department of Physics and Center for Field Theory and Particle Physics Fudan University Collaborative Innovation Center of Advanced Microstructures Nanjing University Perimeter Institute for Theoretical Physics Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

Topological orders are a class of exotic states of matter characterized by patterns of long-range entanglement. Certain topologically ordered systems are proposed as potential realization of fault-tolerant quantum computation. Topological orders can arise in two-dimensional spin-lattice models. In this paper, we engineer a time-dependent Hamiltonian to prepare a topologically ordered state through adiabatic evolution. The other sectors in the degenerate ground-state space of the model are obtained by applying nontrivial operations corresponding to closed string operators. Each sector is highly entangled, as shown from the completely reconstructed density matrices. This paves the way towards exploring the properties of topological orders and the application of topological orders in topological quantum memory.

关键词： topologically ordered state adiabatic evolution nuclear magnetic resonance

NMRCloudQ： a quantum cloud experience on a nuclear magnetic resonance quantum computer

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Science Bulletin 2018年第1期63卷 17-23页

作者： Tao Xin Shilin Huang Sirui Lu Keren Li zhihuang luo Zhangqi Yin Jun Li Dawei Lu Guilu Long Bei Zeng Department of Physics Tsinghua University Beijing 100084 China Center for Quantum Information Institute for Interdiscriplinary Information Sciences Tsinghua University Belting 100084 China Beijing Computational Science Research Center Beijing 100193 China Institute for Quantum Computing University of Waterloo waterloo N2L 3C1 Ontario Canada Department of Physics and Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China The Innovative Center of Quantum Matter Beijing 100084 China Department of Mathematics and Statistics University of Guelph Guelph N1C 2W1 Ontario Canada

Cloud-based quantum computing is anticipated to be the most useful and reachable form for public users to experience with the power of quantum. As initial attempts, IBM Q has launched influential cloud services on a superconducting quantum processor in 2016, but no other platforms has followed up yet. Here,we report our new cloud quantum computing service – NMRCloud Q(http://***/zh-hans/),where nuclear magnetic resonance, one of the pioneer platforms with mature techniques in experimental quantum computing, plays as the role of implementing computing tasks. Our service provides a comprehensive software environment preconfigured with a list of quantum information processing packages,and aims to be freely accessible to either amateurs that look forward to keeping pace with this quantum era or professionals that are interested in carrying out real quantum computing experiments in person. In our current version, four qubits are already usable with in average 99.10% single-qubit gate fidelity and 97.15% two-qubit fidelity via randomized benchmaking tests. Improved control precisions as well as a new seven-qubit processor are also in preparation and will be available later.

关键词： Quantum cloud Nuclear magnetic resonance Gradient ascent pulse engineering Randomized benchmarking

以“乐群名师”学习共同体促进名优教师稳健成长

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中国基础教育 2024年第10期 49-51页

作者：骆志煌福建省福州高级中学党委福建福州350007

福建省福州高级中学打造支撑教师专业化成长的“乐群名师”培养项目,并建立了“乐群名师”学习共同体。学习共同体从学校层面营造亲密合作的“乐群”人文生态,以真实任务驱动,以体现教师真实发展的显性成果为共同愿景,并建立了学习共同... 详细信息

福建省福州高级中学打造支撑教师专业化成长的“乐群名师”培养项目,并建立了“乐群名师”学习共同体。学习共同体从学校层面营造亲密合作的“乐群”人文生态,以真实任务驱动,以体现教师真实发展的显性成果为共同愿景,并建立了学习共同体运行的基本程序与规范,制定学习共同体的运作规则和愿景激励机制,以过程中的总结反思和阶段评价保障共同体健康运转。

关键词：教师专业发展学习共同体名师培养乐群名师

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压气机失速过程中的壁面压力分布特征

航空学报 2013年第9期34卷 2092-2099页

作者：罗志煌李军杨朴吴云刘东健李凡玉空军工程大学航空航天工程学院陕西西安710038 陆军航空兵学院飞行理论系北京101123

为了深入认识失速团在不同时刻的特征,采用一种基于二维壁面静压谱的分析方法对几种典型状态下的单级轴流压气机转子叶尖流场静压分布特征进行了详细研究。结果表明:该方法能很好地观察不同时刻的失速团发展变化过程以及失速团的影响范... 详细信息

为了深入认识失速团在不同时刻的特征,采用一种基于二维壁面静压谱的分析方法对几种典型状态下的单级轴流压气机转子叶尖流场静压分布特征进行了详细研究。结果表明:该方法能很好地观察不同时刻的失速团发展变化过程以及失速团的影响范围,同时还能判别失速团的个数以及大致的旋转速度。用此方法发现该压气机在进入失速后有1个大失速团,影响范围在4/5周向通道左右,而开大节气门后在退出失速的过程中失速团会分裂成为2个,且失速团的影响范围会变得很小,旋转速度增大。

关键词：压气机失速过程转子叶尖动态压力频谱分析

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延长软包装熏味鸭翅保质期的方法研究

中国食品学报 2017年第1期17卷 193-200页

作者：刘加聪刘光明张其标杨秋明罗志煌张懿集美大学生物工程学院福建厦门361021 三明罗大胡子食品厂福建三明365000 福建吉星辐照科技有限公司福建晋江362216

熏味鸭翅制品营养丰富、风味独特,为百姓所喜爱。然而该类产品存在易污染,保质期短,传统高温、高压处理对肉质破坏严重等不足。为此,通过分析熏味鸭翅产品的理化性质及贮藏特性,分离鉴定经巴氏杀菌处理的产品中残留的芽孢杆菌;然后结合... 详细信息

熏味鸭翅制品营养丰富、风味独特,为百姓所喜爱。然而该类产品存在易污染,保质期短,传统高温、高压处理对肉质破坏严重等不足。为此,通过分析熏味鸭翅产品的理化性质及贮藏特性,分离鉴定经巴氏杀菌处理的产品中残留的芽孢杆菌;然后结合栅栏技术,研究延长软包装熏味鸭翅保质期的方法。结果显示:熏味鸭翅于复合保藏剂(0.1%Nisin、0.3%茶多酚和1.0%柠檬酸)中浸泡5 min,经75℃干燥15 min后进行铝箔真空包装,于95℃水浴杀菌30 min或8~10 kGy剂量辐照处理,产品的保质期可达到3个月以上。结论:本文建立的复合保藏剂结合后杀菌处理,可显著延长软包装熏味鸭翅产品的保质期。

关键词：熏味鸭翅保质期复合保藏剂水浴杀菌辐照

Pollution characteristics and quantitative source apportionment of heavy metals within a zinc smelting site by GIS-based PMF and APCS-MLR models

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Journal of Environmental Sciences 2024年第10期144卷 100-112页

作者： Huagang Lv zhihuang Lu Guangxuan Fu Sifang Lv Jun Jiang Yi Xie Xinghua luo Jiaqing Zeng Shengguo Xue School of Metallurgy and Environment Central South UniversityChangsha 410083China Zhuzhou Qingshuitang Technology Co. Ltd.Zhuzhou 412000China New World Environment Protection Group of Hunan Changsha 410083China

The abandoned smelters present a substantial pollution threat to the nearby soil and *** this study,63 surface soil samples were collected from a zinc smelter to quantitatively describe the pollution characteristics,ecological risks,and source apportionment of heavy metal(loid)s(HMs).The results revealed that the average contents of Zn,Cd,Pb,As,and Hg were 0.4,12.2,3.3,5.3,and 12.7 times higher than the risk screening values of the construction sites,***,the smelter was accumulated heavily with Cd and Hg,and the contribution of Cd(0.38)and Hg(0.53)to ecological risk was 91.58%.ZZ3 and ZZ7 were the most polluted workshops,accounting for 25.7%and 35.0%of the pollution load and ecological risk,*** influence of soil parent materials on pollution was minor compared to various workshops within the *** with PMF,APCS-MLR and GIS analysis,four sources of HMs were identified:P1(25.5%)and A3(18.4%)were atmospheric deposition from the electric defogging workshop and surface runoff from the smelter;P2(32.7%)and A2(20.9%)were surface runoff of As-Pb foul acid;P3(14.5%)and A4(49.8%)were atmospheric deposition from the leach slag drying workshop;P4(27.3%)and A1(10.8%)were the smelting process of zinc *** paper described the distribution characteristics and specific sources of HMs in different process workshops,providing a new perspective for the precise remediation of the smelter by determining the priority control factors.

关键词： Smelter site Heavy metal(loid)s Source apportionment Positive matrix factorization Absolute principal component score-multiple linear regression

Efficacy and safety of Sancai powder in patients with type 2 diabetes mellitus: a randomized controlled trial

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Journal of Traditional Chinese Medicine 2016年第5期36卷 640-648页

作者： Guo Qiang Zhang Hengyao Li Mindian Zhao Ziyi luo Yunlin luo Yulei Cao Wenzhai Zhao Huan Zhu Ranran Lei Xingxing Chen Huizhen Gan Huakui Zuo zhihuang Chen Qi Shi Cuimei Zhang Xinli Guo Jian Zhong Sen Chen Qiu School of Clinical Medicine Chengdu University of Traditional Chinese Medicine Department of Endocrinology Ningxia Chinese Medicine Research Center Department of Cellular and Molecular Physiology Section of Comparative Medicine and Program in Integrative Cell Signaling and Neurobiology of Metabolism Yale University School of Medicine Department of Central Laboratory Teaching Hospital of Chengdu University of Traditional Chinese Medicine Department of Traditional Chinese Medicine Dujiangyan Traditional Chinese Medicine Hospital Diabetes Center The third Teaching Hospital of Chengdu University of Traditional Chinese Medicine Medical Department of Cardiology Zigong First People's Hospital Medical Department of Neurology Teaching Hospital of Chengdu University of Traditional Chinese Medicine Department of Endocrinology The First People's Hospital of Neijiang Department of Endocrinology The Central Hospital of Guangyuan Department of Endocrinology Zizhong County Hospital of Traditional Chinese Medicine Department of Endocrinology Hospital of traditional Chinese Medicine of Xichang Department of Endocrinology Liangshan Hospital of Integrated Traditional and Western Medicine Department of Endocrinology The Second People's Hospital of Leshan Medical Department of Infections Teaching Hospital of Chengdu University of Traditional Chinese Medicine Medical Department of Endocrinology Teaching Hospital of Chengdu University of Traditional Chinese Medicine

OBJECTIVE: To assess the efficacy and safety of Sancai powder in patients with type 2 diabetes mellitus(T2DM) inadequately controlled with single oral metformin in a randomized controlled trial(RCT).METHODS: A total of 132 patients with T2 DM were enrolled in the study, who only took metformin(500-1000 mg/day) for at least three months and with inadequate glycemic control(7.0% ≤ hemoglobin A1 c ≤ 9.0%) in the past three *** patients stopped taking metformin with lifestyle interventions for three weeks, and 105 patients qualified for the program. They were randomly divided into the Sancai powder group and the metformin group(1500 mg/day). The follow-up period was for 12 weeks. Comparisons of several variables were ***: No significant differences were found between the two groups in hemoglobin A1c(Hb A1c),fasting plasma glucose(FPG) and 2 h post-meal glucose(2h PG), although they had decreased significantly(P < 0.01). Homeostasis model assessment of beta cell function index was significantly improved in Sancai powder group(P < 0.01), and there were significant differences in the changes of homeostasis model assessment of insulin resistance and insulin sensitivity index in the two groups(P < 0.05). Sancai powder significantly reduced triglyceride level(P < 0.05), although there was no significant difference in the body weight and body mass index in the two ***: In this 12-week study, Sancai powder could significantly reduce hemoglobin A1 c,FPG and 2h PG levels, improved beta-cell function and insulin resistance of the T2 DM inadequately controlled with metformin.

关键词： Diabetes Mellitus Type 2 Sancai powder Metformin Treatment outcome Randomized controlled trial

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多谐波源用户的谐波责任分摊的定量分析

电力自动化设备 2012年第12期32卷 38-42页

作者：许加柱庞丽忠张志文罗隆福曾进辉曹志煌周冠东湖南大学电气与信息工程学院湖南长沙410082 湖南省电力公司湖南长沙410007

提出了一种分步分摊电压电流的谐波责任分摊方法。在考虑滤波器、谐波电压和谐波电流初相角、谐波源用户数目等因素的基础上,对该方法的分摊原理进行了分析,建立了多谐波源用户的谐波电压和电流责任分摊的通用数学模型,并给出了详细的... 详细信息

提出了一种分步分摊电压电流的谐波责任分摊方法。在考虑滤波器、谐波电压和谐波电流初相角、谐波源用户数目等因素的基础上,对该方法的分摊原理进行了分析,建立了多谐波源用户的谐波电压和电流责任分摊的通用数学模型,并给出了详细的实施步骤;最后,以某3谐波源用户系统为例,建立了PSCAD仿真模型,仿真分析了滤波器投入对谐波责任分摊的影响;结果表明所提方法可很好地分摊多谐波源用户间的谐波责任,大幅提高了谐波责任分摊的精确性。

关键词：多谐波源谐波分析责任分摊数学模型定量分析惩奖机制

鼻肠管和鼻胃管对粘连性肠梗阻减压效果的Meta分析

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中华消化外科杂志 2022年第4期21卷 551-556页

作者：林海萍骆洋方洪生敬然秦绍岚赵志煌贡婷月陈石伟魏秋亚钟鸣上海交通大学医学院附属仁济医院胃肠外科上海200120 上海市浦东新区公利医院介入科上海200135 兰州大学第二医院胃肠胰腺外科兰州730030

粘连性肠梗阻是肠梗阻中最常见类型, 通常以保守治疗为首选治疗方案。保守治疗过程中, 胃肠减压能够缓解症状, 防止肠梗阻进展, 加速胃肠道功能恢复, 具有显著临床效果。目前关于鼻肠管和鼻胃管对粘连性肠梗阻的减压效果尚存争议。既往... 详细信息

粘连性肠梗阻是肠梗阻中最常见类型, 通常以保守治疗为首选治疗方案。保守治疗过程中, 胃肠减压能够缓解症状, 防止肠梗阻进展, 加速胃肠道功能恢复, 具有显著临床效果。目前关于鼻肠管和鼻胃管对粘连性肠梗阻的减压效果尚存争议。既往有Meta分析对两者的临床效果作出评价, 但是纳入研究包括非随机对照研究, 且缺少关于中国患者的相关研究。因此, 笔者采用Meta分析评价鼻肠管和鼻胃管对粘连性肠梗阻减压效果。

关键词：肠道疾病粘连性肠梗阻鼻胃管鼻肠管减压 Meta分析

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