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Teleportation of Two-Particle Entangled State via Cluster State

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Communications in Theoretical Physics 2007年第3期47卷 464-466页

作者： li da-chuang CAO Zhuo-liang Key Laboratory of Opto-Electronic Information Acquisition and Manipulation Ministry of Education and School of Physics and Material Science Anhui University Hefei 230039 China

In this paper, two schemes for teleporting an unknown two-particle entangled state from the sender （Alice） to the receiver （Bob） via a four-particle entangled cluster state are proposed. In these two schemes, the unknown twoparticle entangled state can be teleported perfectly. The successful probabilities and fidelities of the schemes can reach unity.

关键词： quantum teleportation Bell state measurement (BSM) quantum controlled phase gate

Thermal Entanglement in the Spin-S Heisenberg XYZ Model

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Chinese Physics Letters 2014年第4期31卷 5-8页

作者： li Hu li da-chuang WANG Xian-Ping YANG Ming CAO Zhuo-liang School of Physics Material Science Anhui University Hefei 230039 School of Electronic and Information Engineering Hefei Normal University Hefei 230601 Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics University of Science and Technology of China Hefei 230026 Department of Physics Fuyang Teachers College Fuyang 236041

The thermal entanglement in the spin-S Heisenberg XYZ model is studied in detail by using the entanglement measure of negativity. The effects of spin on the thermal entanglement, the threshold temperature, the critical uniform external magnetic field, the nonuniform external magnetic field and the＇, entanglement extremum are discussed, respectively. It is shown that with increasing spin, the entanglement will increase, and then decrease slowly. In addition, we find that entanglement will approach a constant Nc with the increase of DM interaction, the constant increases with the increase of spin, and both the threshold temperature Tc and critical uniform external magnetic field Bc will increase with the increasing spin. Thus high-spin system can inhibit the influence of the external environment better.

关键词： SPIN-spin interactions HEISENBERG model MAGNETIC fields QUANTUM dots BOLTZMANN'S equation

Teleportation for an Unknown Entangled State Without Any Joint Measurement via Josephson Charge Qubits

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Communications in Theoretical Physics 2008年第5期49卷 1195-1198页

作者： li da-chuang ZHENG Xiao-Hu DONG Ping CAO Zhuo-liang Key Laboratory of Opto-electronic Information Acquisition and Manipulation Ministry of Education School of Physics＆ Material Science Anhui University Hefei 230039 China

An experimentally feasible scheme for teleportation of an arbitrary unknown entangled state is proposed. Our scheme is based on Josephson charge qubits, where we do not need any joint measurement. Moreover the successful probability and fidelity of the teleportation can both reach 1.0. The current scheme can be realized within the current experimental technology.

关键词： quantum teleportation Bell-state measurement Josephson charge qubits

Realization of Optimal Universal and Phase-Covariant Quantum Machines via Input-Output Cavities

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Chinese Physics Letters 2013年第3期30卷 9-13页

作者： WANG Cong-Rong li da-chuang ZHANG Feng-Yuan XU Rui-Min School of Electronics and Information Engineering Hefei Normal UniversityHefei 230601 Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics University of Science and Technology of ChinaHefei 230026

We present a scheme to realize a special quantum cloning machine via input-output *** cloning machine can copy information from one atom to another distant *** different parameters,the method can perform optimal symmetric(asymmetric)universal quantum cloning and optimal symmetric(asymmetric)phase-covariant *** to previous schemes,our scheme is more insensitive to actual environmental noise and can get higher fidelity in a current cavity quantum electrodynamics system with an entangled state acting as a quantum channel than a single-photon pulse.

关键词： quantum scheme asymmetric

Seya-Namioka类型真空紫外光谱系统的研制和性能测试

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光谱学与光谱分析 2024年第8期44卷 2158-2165页

作者：沈永才钮雨凡孔德峰叶扬张寿彪李大创谭名昇黄艳清赵志豪訾鹏飞张小辉文斐合肥师范学院物理与材料工程学院安徽合肥230601 合肥综合性国家科学中心能源研究院(安徽省能源实验室) 安徽合肥230031 中国科学院合肥物质科学研究院等离子体物理研究所安徽合肥230031 衡阳师范学院物理与电子工程学院湖南衡阳421008 合肥工业大学计算机与信息学院安徽合肥230009

为了满足磁约束核聚变领域的杂质测量要求,研制了一套Seya Namioka真空紫外光谱仪。该光谱仪的主要部件是可调宽度的入射狭缝、凹面光栅和探测器。光谱仪的光通量通过可调节宽度的入射狭缝来调节,入射狭缝宽度可以在10~1000μm范围内调... 详细信息

为了满足磁约束核聚变领域的杂质测量要求,研制了一套Seya Namioka真空紫外光谱仪。该光谱仪的主要部件是可调宽度的入射狭缝、凹面光栅和探测器。光谱仪的光通量通过可调节宽度的入射狭缝来调节,入射狭缝宽度可以在10~1000μm范围内调节。分光元件选用线密度为1200 lines·mm^(-1)的凹面全息光栅。光栅表面涂有铝(Al)和氟化镁(MgF2),以提高衍射效率。光栅的可使用波段为50~460 nm,针对其中的50~250 nm波段进行光路优化设计。选用深度制冷背照式电荷耦合器件(CCD)作为光谱仪的探测器。通过转动光栅转台旋转光栅来改变衍射角,实现50~250 nm范围内的光谱观测。基于凹面光栅的参数,确定了具体光路,并分析了波长随光栅旋转角度的变化关系及不同波长处的线色散率。基于凹面光栅成像理论,对系统的光谱分辨率进行了计算分析。通过分析不同出射臂下的光谱分辨率,确定最优出射臂为205 mm。在出射臂为205 mm、入射狭缝为20μm的情况下,分析了入射狭缝宽度、像素大小、像差和衍射极限对光谱分辨率影响。结果表明:衍射极限对光谱分辨率的影响最小,基本上可以忽略不计,出射狭缝的宽度对光谱分辨率有较大贡献,大约为0.09~0.10 nm,且在50~250 nm波长范围内缓慢增加。分析了不同入射狭缝宽度(10~80μm)下光谱分辨率,光谱分辨率随狭缝宽度呈递增趋势,变化范围为0.10~0.32 nm,当狭缝宽度达到80μm时,光谱分辨率已经变的较差,不利于高分辨线辐射光谱测量。在实际测量中,应该综合考虑光通量和光谱分辨率需求。采用低压汞灯和微波等离子体光源进行波长校准和性能测试。基于零阶光谱和汞灯的特征光谱HgⅠ(185 nm)对光谱仪进行了波长标定。通过HgⅠ(185 nm)谱线的高斯拟合分析,得到仪器在185 nm处的光谱分辨率为0.1243 nm,与理论计算值接近。通过实验与理论计算对比不同出射臂下的HgⅠ(185 nm)光谱分辨率,验证了仪器在出射臂为205 mm处获得最佳光谱分辨能力。利用微波等离子体放电光源装置对光谱仪进行了进一步的性能测试,基于光源发射的氮、氧和氦线的测量,验证了光谱仪在50~250 nm波长范围内具有良好的探测能力。

关键词：真空紫外光谱仪凹面全息光栅光谱分辨率波长标定

Photoswitchable Spiropyridine Enabled Photoactuation of Polymeric Hydrogels under Physiological pH Conditions

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Chinese Journal of Polymer Science 2024年第10期42卷 1602-1609页

作者： Cong liao Meng-Qi Du chuang li Key Laboratory of Precision and Intelligent Chemistry Department of Polymer Science and Engineering University of Science and Technology of China

The incorporation of molecular switches into polymer networks has been a powerful approach for the development of functional polymer materials that display macroscopic actuation and function enabled directly by molecular changes. However, such materials sometimes require harsh conditions to perform their functions, and the design of new molecular photoswitches that can function under physiological conditions is highly needed. Here, we report the design and synthesis of a spiropyridine-based photoswitchable hydrogel that exhibits light-driven actuation at physiological pH. Owing to its high p Ka, spiropyridine maintains its ring-open protonated form at neutral pH, and the resulting hydrogel remains in a swollen state. Upon irradiation with visible light, the ring closure of spiropyridine leads to a decrease in the charge and a reduction in the volume of the hydrogel. The contracted gel could spontaneously recover to its expanding state in the dark, and this process is highly dynamic and reversible when the light is switched on and off. Furthermore, the hydrogel shows switchable fluorescence in response to visible light. Bending deformation is observed in the hydrogel thin films upon irradiation from one side. Importantly, the independence of this spiropyridine hydrogel from the acidic environment makes it biotolerant and shows excellent biocompatibility. This biocompatible spiropyridine hydrogel might have important biorelated applications in the future.

关键词： Biocompatibility Photoactuation Physiological pH Polymer hydrogel Spiropyridine photowitch

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基于花朵授粉算法的产品拆卸序列规划

计算机集成制造系统 2016年第12期22卷 2791-2799页

作者：焦庆龙徐达李闯装甲兵工程学院兵器工程系北京100072

针对产品拆卸序列规划问题,提出一种基于花朵授粉算法的求解拆卸序列规划问题的方法。结合智能优化算法求解拆卸序列规划问题的特点,采用遗传算法的优先关系保留交叉操作方式,对花朵授粉算法的授粉方式进行了离散化处理。在建立离散花... 详细信息

针对产品拆卸序列规划问题,提出一种基于花朵授粉算法的求解拆卸序列规划问题的方法。结合智能优化算法求解拆卸序列规划问题的特点,采用遗传算法的优先关系保留交叉操作方式,对花朵授粉算法的授粉方式进行了离散化处理。在建立离散花朵授粉算法的基础上,构建了评价拆卸序列质量的适应度函数模型。通过实例对离散花朵授粉算法在不同初始条件设置的情况下进行了实验分析,并与遗传算法进行了比较,证明了所提算法的可行性与优越性。

关键词：拆卸序列规划花朵授粉算法拆卸优先关系拆卸作业位置

Imaging a force field via an optically levitated nanoparticle array

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CHINESE PHYSICS B 2024年第9期33卷 179-184页

作者： Lv, Bihu Zhang, Jiandong li, chuang Res Ctr Novel Comp Sensing & Intelligent Proc Zhejiang Lab Hangzhou 311121 Peoples R China Jiangsu Univ Technol Sch Math & Phys Changzhou 213001 Peoples R China

Levitated optomechanical systems represent an excellent candidate platform for force and acceleration sensing. We propose a force-sensing protocol utilizing an optically levitated nanoparticle array. In our scheme, N nanoparticles are trapped in an optical cavity using holographic optical tweezers. An external laser drives the cavity, exciting N cavity modes interacting simultaneously with the N nanoparticles. The optomechanical interaction encodes the information of the force acting on each nanoparticle onto the intracavity photons, which can be detected directly at the output ports of the cavity. Consequently, our protocol enables real-time imaging of a force field.

关键词： optomechanics levitated nanoparticles force field detection 07.10.Cm 42.50.Lc 42.50.Wk 03.67.-a QUANTUM CONTROL MANIPULATION TWEEZERS MOTION

The impact of broad glutamine metabolism inhibition on the tumor microenvironment

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Genes & Diseases 2024年第3期11卷 2-4页

作者： Tianhe li Yun-Ta chuang Tian-li Wang Departments of Pathology Oncologyand Gynecology and ObstetricsThe Sidney Kimmel Comprehensive Cancer CenterJohns Hopkins University School of MedicineBaltimoreMD 21231USA

Glutamine is an importantα-amino acid that provides carbon and nitrogen sources for the biosynthesis of nucleotides,proteins,and *** also generates metabolites that fuel the tricarboxylic acid cycle and maintain intracellular redox *** cells have a heightened metabolic dependence on glutamine to support incessant tumor growth and mitigate tumor microenvironmental stresses including hypoxia,nutrient depletion.

关键词： metabolism tumor microenvironment