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基于干涉和实时前馈实现三个量子节点的纠缠

原子与分子物理学报 2025年第4期42卷 113-120页

作者：刘艳红陈伟李雁翔太原师范学院物理系晋中030619 太原师范学院计算机科学与技术学院晋中030619 山西北方机械制造有限责任公司太原030009

纠缠多个空间分离的远程量子节点是构建量子信息网络的基础,不仅如此,多量子节点间的纠缠亦可应用于分布式量子计算和量子精密测量等,实现更高纠缠度的多量子节点间纠缠势在必行.文中基于干涉和实时前馈,借助于腔增强通过采用受激拉曼... 详细信息

纠缠多个空间分离的远程量子节点是构建量子信息网络的基础,不仅如此,多量子节点间的纠缠亦可应用于分布式量子计算和量子精密测量等,实现更高纠缠度的多量子节点间纠缠势在必行.文中基于干涉和实时前馈,借助于腔增强通过采用受激拉曼散射机制实现三个远距离原子系综的纠缠.该方案中只需要三套腔增强原子系统,光学谐振腔增强了光和原子之间的相互作用,使得通过受激拉曼散射产生的斯托克斯光场和反斯托克斯光场的效率得到提高,实现了高纠缠度的光与原子纠缠.在此前提下,基于斯托克斯光场的干涉和实时前馈实现三个远程原子节点间的纠缠.这种方法可以扩展到更大规模,甚至更加复杂的量子信息网络中,从而在量子信息科学中具有潜在的应用.

关键词：原子系综纠缠干涉实时前馈受激拉曼散射

Euler solution using adaptive Cartesian grid with a gridless boundary treatment

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Acta Mechanica Sinica 2009年第2期25卷 187-196页

作者： l. xiang G. Yang lHD of Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China lHD of Institute of Mechanics Chinese Academy of Sciences 100190 Beijing China

A quadtree-based adaptive Cartesian grid generator and flow solver were developed. The grid adaptation based on pressure or density gradient was performed and a gridless method based on the least-square fashion was used to treat the wall surface boundary condition, which is generally difficult to be handled for the common Cartesian grid. First, to validate the technique of grid adaptation, the benchmarks over a forward-facing step and double Mach reflection were computed. Second, the flows over the NACA 0012 airfoil and a two-element airfoil were calculated to validate the developed gridless method. The computational results indi- cate the developed method is reasonable for complex flows.

关键词： Cartesian grid Gridless method Adaptation technique Euler solution

Bending strength and fracture surface topography of natural fiber-reinforced shell for investment casting process

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China Foundry 2016年第3期13卷 211-216页

作者： Kai lü xiang-dong liu Zhao-xin Du Yan-fen li School of Materials Science and Engineering inner Mongolia University of Technology Hohhot 010051 China Key laboratory of Materials Processing & Control Engineering of Inner Mongolia Autonomous Region Hohhot 010051 China

In order to improve the properties of silica sol shell for investment casting process, various contents of cattail fibers were added into the slurry to prepare a fiber-reinforced shell in the present study. The bending strength of fiber-reinforced shell was investigated and the fracture surfaces of shell specimens were observed using SEM. It is found that the bending strength increases with the increase of fiber content, and the bending strength of a green shell with 1.0 wt.% fiber addition increases by 44% compared to the fiber-free shell. The failure of specimens of the fiber-reinforced green shell results from fiber rupture and debonding between the interface of fibers and adhesive under the bending load. The micro-crack propagation in the matrix is inhibited by the micro-holes for ablation of f ibers in specimens of the f iber-reinforced shell during the stage of being fired. As a result, the bending strength of specimens of the fired shell had no significant drop. Particularly, the bending strength of specimens of the fired shell reinforced with 0.6wt.% fiber reached the maximum value of 4.6 MPa.

关键词： fiber-reinforced shell investment casting bending strength fracture surface topography

Glaucoma surgery and induced astigmatism:a systematic review

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Eye and Vision 2017年第1期4卷 159-163页

作者： Helen H.l.Chan Yu xiang G.Kong Royal Victorian Eye and Ear Hospital 32 Gisborne StEast MelbourneVIC 3002Australia

Background:The refractive outcomes of glaucoma surgeries,particularly their effect on astigmatism,are incompletely *** body:Trabeculectomy is associated with a considerable amount of with-the-rule astigmatic change in the immediate postoperative *** is followed by a gradual against-the-rule *** changes are altered with the use of mitomycin C(MMC).Non-penetrating surgery such as deep sclerectomy is also associated with a similar or smaller degree of induced *** invasive glaucoma surgery appears to be astigmatically *** is no clear evidence regarding refractive outcomes of glaucoma drainage device ***:Induced astigmatism may account for a reduction in unaided visual acuity in the early postoperative period following a successful *** changes appear to stabilise at 3 months,and it would be prudent to defer the prescription of new glasses until this *** sequential cataract surgery is to be performed,toric intraocular lenses can be a useful option for astigmatic correction.

关键词： Filtration surgery Trabeculectomy Astigmatism Refractive outcome

Crust Cooling of Soft X-Ray Transients——the Uncertainties of Shallow Heating

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Research in Astronomy and Astrophysics 2022年第5期22卷 165-175页

作者： xiang-Yang lu Guo-liang lü He-lei liu Chun-Hua Zhu Zhao-Jun Wang School of Physical Science and Technology Xinjiang UniversityUrumqi 830046China Center for Theoretical Physics Xinjiang UniversityUrumqi 830046China

Crust cooling of soft X-ray transients has been observed after outbursts,but an additional shallow heating during accretion in outburst is needed to explain the quiescent light ***,shallow heating is significantly different between sources and even within one source between different outbursts,and the source of shallow heat is as yet *** the open source code"dStar"which solves the fully general relativistic heat diffusion equation for the crust,we investigate the effect of magnitude and depth of shallow heating on crust cooling and find that some exceptional sources(Swift J174805.3-244637,MAXI J0556-332 during outburstⅡand GRO J1750-27)in which shallow heating may be inactive could be explained by a deeper shallow heating *** compare our results with those from previous works and find that the shallow heating is model *** addition,the effects of mass and radius of a neutron star on shallow heating are studied,and it is shown that the more compact the star,the less shallow heating will be needed to fit the crust cooling light curves.

关键词： stars neutron-X-rays:binaries-stars individual(GROJ1750-27)-X-rays burs

Photosynthetic properties of the mid-vein and leaf lamina of field-grown, high-yield hybrid rice during senescence

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Journal of Integrative Agriculture 2022年第7期21卷 1913-1926页

作者： GAO Zhi-ping XU Min-li ZHANG Hai-zi lü Chuan-gen CHEN Guo-xiang College of life Sciences Nanjing Normal UniversityNanjing 210023P.R.China Institute of Food and Crops Jiangsu Academy of Agricultural SciencesNanjing 210014P.R.China

Previous studies with rice(Oryza sativa l.) have shown that the different components of the photosynthetic apparatus are not uniformly synthesized or degraded during senescence. However, while most of those studies have focused on the leaf lamina, few have addressed senescence-associated chloroplast function or leaf physiology. Here, we investigated the photosynthetic properties of the mid-vein and leaf lamina in a high-yield hybrid rice cultivar(liangyoupei 9, lYP9) during the senescence stage. Assimilation and transpiration decreased more slowly in the mid-vein than in the lamina during senescence, suggesting more sustained photosynthesis in the mid-vein, as well as stronger heat dissipation. Two-dimensional gel electrophoresis suggested that photosynthesis and energy metabolism were less affected by senescence in the mid-vein than in the leaf lamina. During late senescence, the excess energy dissipation in the midvein through the xanthophyll cycle had a higher active photosynthetic capacity than in the leaf lamina, and we inferred that the mid-vein and leaf lamina of lYP9 rice differed in terms of their maturation. Taken together, these results provide new insights into the underlying mechanisms of senescence of the rice mid-vein and associated physiology.

关键词： mid-vein rice photosynthetic properties senescence

The Existence of Weak Solutions to the 2D Euler Equations with Initial Vorticity in BMO

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Acta Mathematica Sinica,English Series 2007年第10期23卷 1881-1888页

作者： xiang Rong ZHU Department of Mathematics Zhejiang University Hangzhou 310027 P. R. China

We shall prove that there exists a weak solution to the 2D Euler equations with initial vorticity in BMO and initial velocity in l^∞.

关键词： Euler equation weak solution BMO

3D Printed Gelatin Scaffold with Improved Shape Fidelity and Cytocompatibility by Using Antheraea pernyi Silk Fibroin Nanofibers

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Advanced Fiber Materials 2022年第4期4卷 758-773页

作者： Shengzhi Zou Suna Fan Ana l.Oliveira xiang Yao Yaopeng Zhang Huili Shao State Key laboratory for Modification of Chemical Fibers and Polymer Materials Shanghai Engineering Research Center of Nano‑Biomaterials and Regenerative MedicineCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China CBQF‑Centro de Biotecnologia e Quimica Fina‑laboratorio Associado Escola Superior de BiotecnologiaUniversidade Catolica PortuguesaRua Diogo Botelho 13274169‑005 PortoPortugal

Gelatin(G)is a commonly used natural biomaterial owing to its good biocompatibility and easy ***,using pure gelatin as a bioink can barely achieve an ideal shape fidelity in 3D *** this study,Antheraea pernyi silk fibroin nanofibers(ASFNFs)with arginine-glycine-aspartic acid(RGD)peptide and partial natural silk structure are extracted and combined with pure gelatin bioink to simultaneously improve the shape fidelity and cytocompatibility of corresponding 3D printed *** show that the optimum printing temperature is 30℃ for these *** printed filaments using 16G/4ASFNFs bioink(16wt%gelatin and 4wt%ASFNFs)demonstrate better morphology and larger pore size than those printed by pure gelatin bioink(20G,20wt%gelatin),thus successfully improve the shape fidelity and porosity of the 3D printed *** 16G/4ASFNFs scaffold also demonstrate higher swelling ratio and faster degradation rate than the pure gelatin ***,the cell viability and proliferation ability of Schwann cells cultured on the 16G/4ASFNFs scaffold are significantly superior than those cultured on the pure 20G *** ASFNFs enhanced 16G/4ASFNFs scaffold reported here are expected to be a candidate with excellent potential for biomedical applications.

关键词： Antheraea pernyi silk fibroin nanofiber 3D printed scaffold Shape fidelity Cytocompatibility Gelatin

Continuous-Variable Entanglement in Tunnel-Coupled Double Quantum Wells

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Communications in Theoretical Physics 2009年第5期51卷 831-838页

作者： lü Xin-You lIU Ji-Bing HAO xiang-Ying HUANG Pei YANG Xiao-Xue School of Physics Huazhong University of Science and Technology Wuhan 430074 China

This paper investigates the generation and evolution of continuous-variable entanglement in an asymmetric coupled-quantum well （CQW） system. Our numerical results show that this CQW system can be regarded as a source of macroscopic entangled light over a wide range of initial states of the cavity field. This investigation can be used for achieving the macroscopic entangled light in the CQW solid-state medium, which is much more praeticaJ than that in an atomic medium because of its flexible design and the controllable interference strength.

关键词： continuous-variable entanglement semiconductor quantum well