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Plasmonic-photonic cavity for high-efficiency single-photon blockade

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Science China(Physics,Mechanics & Astronomy) 2021年第7期64卷 98-107页

作者： yu-Wei lu Jing-feng Liu Zeyang Liao Xue-Hua Wang State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSun Yat-sen UniversityGuangzhou510275China College of Electronic Engineering South China Agricultural UniversityGuangzhou510642China

The generation and manipulation of single photons are crucial in advanced quantum technologies, such as quantum communication and quantum computation devices. High-purity single photons can be generated from classical light using the single-photon blockade(1 PB). However, the efficiency and purity are exclusive in 1 PB, which hinders its practical applications. Here, we show that the resonantly coupled plasmonic-photonic cavity can boost the efficiency of single-photon generation by more than three orders of magnitude compared with that of all-dielectric microcavity. This significant improvement is attributed to two new mechanisms of atom-microcavity coupling after introducing the plasmonic cavity: the formation of a quasi-bound state and the transition to the nonreciprocal regime, due to the destructive interference between the coupling pathways and the nonzero relative phase of the closed-loop coupling, respectively. The quasi-bound state has a relatively small decaying, while its effective coupling strength is significantly enhanced. Suppressing the dissipative component of the effective atom-microcavity coupling in the nonreciprocal regime can further improve single-photon performance, particularly without temporal oscillations. Our study demonstrates the possibility of enhancing the intrinsically low efficiency of 1 PB in low excitation regime, and unveils the novel light-matter interaction in hybrid cavities.

关键词： single-photon blockade atom-photon quasi-bound state plasmonic-photonic cavity

Several equivalent characterizations of fractional Hajlasz-Morrey-Sobolev spaces

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Applied Mathematics(A Journal of Chinese Universities) 2016年第3期31卷 343-354页

作者： yuAN Wen lu yu-feng YANG Da-chun School of Mathematical Sciences Beijing Normal University Laboratory of Mathematics and Complex Systems Ministry of Education Beijing 100875 China.

In this article, the authors establish several equivalent characterizations of fractional Hajlasz-Morrey-Sobolev spaces on spaces of homogeneous type in the sense of Coifman and Weiss.

关键词： Sobolev space Morrey space Morrey-Sobolev space Haj lasz gradient space of homogeneous type maximal operator

Dirichlet空间上的Toeplitz算子

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数学学报（中文版） 2003年第5期46卷 981-984页

作者：卢玉峰孙顺华大连理工大学应用数学系大连116024 四川大学数学学院四川成都610064

本文研究了Dirichlet空间上的Toeplitz算子,部分的回答了文[1]中的问题,给出了关于Dirichlet空间上Toeplitz算子的一个稠密性定理。

关键词： Dirichlet空间 Toeplitz算子紧算子

A distributed normalized Nash equilibrium seeking algorithm for power allocation among micro-grids

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Science China(Technological Sciences) 2021年第2期64卷 341-352页

作者： FU Zao yu WenWu lu JinHu YAO YiYang MEI feng School of Cyber Science and Engineering Southeast UniversityNanjing 210096China School of Mathematics Southeast UniversityNanjing 210096China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China State Grid Zhejiang Electric Power Company Information&Telecommunication Branch Hangzhou 310007China

In this paper, a power allocation problem based on the Cournot game and generalized Nash game is proposed. After integrating dynamic average consensus algorithm and distributed projection neural network through singular perturbation systems, a normalized Nash equilibrium seeking algorithm is presented to solve the proposed power allocation problem in a distributed *** Lyapunov stability with the singular perturbation analysis, the convergence of the proposed algorithm is analyzed. A simulation on IEEE 118-bus confirms that the proposed distributed algorithm can adjust the power allocation according to different situations, while keeping the optimal solution within the feasible set.

关键词： generalized Nash game normalized nash equilibrium points distributed nash equilibrium seeking algorithm

Fabrication and characterization of novel biodegradable Zn-Mn-Cu alloys

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Journal of Materials Science & Technology 2018年第6期34卷 1008-1015页

作者： Zhang-Zhi Shi Jing yu Xue-feng Liu lu-Ning Wang School of Materials Science and Engineering University of Science and Technology Beijing

Zn-Mn-Cu alloys with micro-alloying of Mn and Cu in Zn are developed as potential biodegradable met- als. Although the as-cast alloys are very brittle, their ductilities are significantly improved through hot rolling. Among the as-cast and the as-hot-rolled alloys, as-hot-rolled Zn-0.35Mn-0.41 Cu alloy has the best comprehensive property. It has yield strength of 198.4 ± 6.7 MPa, tensile strength of 292.4 ± 3.4 MPa, elongation of 29.6 ±3.8% and corrosion rate of 0.050-0.062 mm a^-1. A new ternary phase is characterized and determined to be MnCuZn18, which is embedded in MnZn13, resulting in a coarse cellular/dendritic MnZna3-MnCuZn18 compound structure in Zn-0.75 Mn-0.40Cu alloy. Such a coarse compound structure is detrimental for wrought alloy properties, which guides future design of Zn-Mn-Cu based alloys. The preliminary research indicates that Zn-Mn-Cu alloy system is a promising candidate for potential cardiovascular stent applications.

关键词： Zn alloys Biodegradability Strength Ductility Corrosion behavior

2006—2015年辽宁口岸蚊、蝇种群结构及其携带病原体监测检测

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中国国境卫生检疫杂志 2016年第6期39卷 385-391页

作者：程晓兰王光陈雪松高玉峰姜陆宋锋林辽宁出入境检验检疫局辽宁大连116001 内蒙古出入境检验检疫局

目的综合分析辽宁口岸蚊类、蝇类监测结果及病原体检测结果,为辽宁口岸蚊类、蝇类及相关虫媒传染病的防控提供基础数据。方法 2006年1月-2015年12月,在辽宁口岸15个监测点,采用灯诱法、人帐诱捕法和勺捞法等监测蚊类;采用笼诱法网捕法... 详细信息

目的综合分析辽宁口岸蚊类、蝇类监测结果及病原体检测结果,为辽宁口岸蚊类、蝇类及相关虫媒传染病的防控提供基础数据。方法 2006年1月-2015年12月,在辽宁口岸15个监测点,采用灯诱法、人帐诱捕法和勺捞法等监测蚊类;采用笼诱法网捕法监测蝇类。用RT-PCR等分子生物学技术对蚊类携带的日本脑炎病毒(Japanese encephalitis virus,JEV)、库蚊黄病毒(Culex flavivirus)等黄病毒属(Flavivirus)的病毒进行检测;利用细菌学技术对蝇类携带的致病菌(条件致病菌)进行检测;利用寄生虫学技术对蝇类携带的寄生虫虫卵进行检测。结果共捕获蚊类3属15种119 184只、蝇类40属101种238 065只。淡色库蚊(Culex pipiens pallens)为辽宁口岸优势蚊种,丝光绿蝇(lucilia sericata)等丽蝇科(Calliphoridae)种类为辽宁口岸优势蝇种。从蚊类样本中检测到日本脑炎病毒和库蚊黄病毒,从蝇类样品检测到肺炎克雷伯菌(Klebsiella Pneumoniae)、铜绿假单胞菌(Pseudomonas aeruginosa)和松鼠葡萄球菌(Staphylococcus sciuri)等39种致病菌(条件致病菌)。结论辽宁口岸蚊类和蝇类均携带多种病原体,存在传播相关传染病的风险,应进一步加强防控措施。

关键词：辽宁口岸蚊类蝇类病原体

Advances in ethnopharmacology,phytochemistry and pharmacology of Erigerontis Herba and its Chinese medicine prescriptions

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Traditional Medicine Research 2025年第1期10卷 44-61页

作者： Yang Zhou yuan-Yan Huang Ding-yue Shang Ying Chen Meng Tian Cheng-yu Jin Xin lu Bing-Chun Yan Han-Qing Pang Institute of Translational Medicine School of MedicineYangzhou UniversityYangzhou 225009China Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases Yangzhou UniversityYangzhou 225009China School of Medicine Nanjing University of Chinese MedicineNanjing 210023China State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Guangxi Normal UniversityGuiling 541004China.

Erigerontis Herba(EH),the dried whole plant of Erigeron breviscapus,is well-known for circulating blood,activating meridians to alleviate pain,expelling wind,and clearing away *** has been extensively utilized in southern China for the treatment of stroke hemiplegia,chest stuffiness and pains,rheumatic arthralgia,headache,and *** review focuses on the botany,ethnopharmacology,phytochemistry,pharmacology and toxicity of EH and its related prescriptions to offer new insights for prospective research of *** information about EH was retrieved from ancient records and books,PubMed,China National Knowledge Infrastructure,Chinese Pharmacopoeia,Web of Science,Doctoral and Master’s Theses,and various electronic *** is a member of Compositae family and is mainly grown in southern *** Chinese medicine records that EH has the effects of circulating blood and removing blood stasis,expelling wind,and removing cold,as well as relieving rigidity of muscle and relieving *** now,nearly 200 ingredients have been characterized from EH,including flavonoids,caffeoyls,aromatic acids,coumarins,pentacyclic terpenoids,volatile oil and other *** extracts,EH related prescriptions(Dengzhan Xixin injection,Dengzhan Shengmai capsules,etc.)or compounds(scutellarin,scutellarein,etc.)possessed obvious therapeutic effects of ischemic stroke,cerebral hemorrhage,myocardial infarction,Alzheimer’s disease,diabetes and its complications,gastric cancer,bone,and joint degenerative ***,the major active compound of EH,has been used as a quality *** no obvious toxicity of EH has been *** to its traditional applications,ethnopharmacology,phytochemistry,pharmacology,and toxicity,EH was applied as a valuable herb for clinical application in food and medicine *** several compounds have been shown to possess diverse biological activities,the underlying mechanisms of their actions remain *** fully exploi

关键词： Erigeron breviscapus traditional applications ethnopharmacology phytochemistry pharmacology

Stage separation of recoverable liquid launch vehicle by using moving pulsating ball analogue for propellant sloshing

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Chinese Journal of Aeronautics 2024年第2期37卷 360-370页

作者： yu lu Baozeng yuE Bailong HAO Bole MA feng LIU yuanyuan CHANG School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Beijing Institute of Astronautical Systems Engineering Beijing 100076China

In the process of stage separation of recoverable liquid launch vehicles,because of the large amount of residual fuel in the storage tanks,the influence of liquid sloshing on separation safety must be *** calculation simplicity and operation practicability,the Moving Pulsating Ball Model(MPBM)of large amplitude liquid sloshing is introduced into the calculation of launch vehicle stage *** the dynamic equation of the model with the energy relationship during"breathing movement",the formula calculating the force of liquid on the rigid body is *** with the calculations of commercial CFD calculation software,the accuracy of MPBM model is ***,all the external forces and moments are applied to the rigid body of the stages,so that the translational and rotational dynamic equations of the stages are obtained *** to the relative position of the two stages,the geometric shape of the interstage section and the engine of the second stage,the minimum clearance in the separation process can be decided to guarantee that the separation process is safe.

关键词： Moving Pulsating Ball Model(MPBM) Dynamics of stage separation Large amplitude sloshing Recoverable liquid launch vehicle Flight dynamics

An experimental and modeling study of n-hexadecane autoignition under low-to-intermediate temperatures

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Science China(Technological Sciences) 2020年第5期63卷 719-730页

作者： yu Liang WANG Wenyu WANG SiXu feng yuan QIAN Yong lu XingCai Key Laboratory for Power Machinery and Engineering of M.O.E. Shanghai Jiao Tong UniversityShanghai 200240China

N-hexadecane is a potential candidate of diesel surrogate fuels and is also the largest linear alkane(n-alkanes)with known chemical kinetic *** objective of this study is to investigate the autoignition characteristics of n-hexadecane in the lowto-intermediate temperature region and to validate the existing kinetic *** this study,the ignition delay times(IDTs)of nhexadecane were measured using a heated rapid compression machine(RCM)at two pressures of 7 and 10 bar,and over equivalence ratios ranging from 0.5 to ***-stage ignition characteristic and the negative temperature coefficient(NTC)behavior of total ignition delay time were experimentally *** study paid special attention to the influence of pressure,equivalence ratio,and oxygen content on the IDTs of *** is observed that both the total IDTs and the first-stage IDTs decrease with the rise of those *** is worth noting that the first-stage IDT is found to show a greater dependence on temperature but a weaker dependence on other parameters compared to the total *** observed IDT dependence in the lowtemperature region(LTR)were quantitatively described by ignition delay time *** newly measured IDTs were then validated against two kinetic models(LLNL and CRECK).Simulation results show that both models underpredict the first-stage IDT but generally capture the temperature *** CRECK model well predicts the total IDTs of n-hexadecane while the LLNL model significantly underpredicts the total IDTs at most investigated *** the best of our knowledge,this study is the first investigation on n-hexadecane autoignition under low-to-intermediate temperatures,which deepens the understanding of large n-alkane oxidation and contributes to the improvement of the existing kinetic models.

关键词： n-hexadecane autoignition rapid compression machine low-temperature reactivity ignition delay time kinetic model