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Communications in Theoretical Physics 2005年第2X期44卷 269-273页

作者： YUAN Hong-Chun qi kai-guo Department of Physics University of Science and Technology of China Hefei 230026 China Department of Physics Huaibei Coal Industry Teachers' College Huaibei 235000 China

We mostly investigate two schemes. One is to teleport a multi-mode W-type entangled coherent state using a peculiar bipartite entangled state as the quantum channel different from other proposals. Based on our formalism,teleporting multi-mode coherent state or squeezed state is also possible. Another is that the tripartite entangled state is used as the quantum channel of controlled teleportation of an arbitrary and unknown continuous variable in the case of three participators.

关键词： entangled state representation continuous variable quantum teleportation

Continuous Multipartite Entangled Representation and Its Wigner Operator and Marginal Distribution

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Communications in Theoretical Physics 2005年第6X期44卷 1015-1020页

作者： YUAN Hong-Chun LI Heng-Mei qi kai-guo Department of Physics University of Science and Technology of China Hefei 230026 China Department of Physics Huaibei Coal Industry Teachers' College Huaibei 235000 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China

By extending the EPR bipartite entanglement to multipartite case, we briefly introduce a continuous multipartite entangled representation and its canonical conjugate state in the multi-mode Fock space, analyze their Schmidt decompositions and give their entangling operators. Furthermore, based on the above analysis we also find the n-mode Wigner operator. In doing so we may identify the physical meaning of the marginal distribution of the Wigner function.

关键词： continuous multipartite entangled representation Wigner operator marginal distribution

Multipartite State Representations in Multi-mode Fock Space and Their Squeezing Transformations

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Communications in Theoretical Physics 2007年第1期47卷 31-34页

作者： YUAN Hong-Chun LI Heng-Mei qi kai-guo Department of Physics Huaibei Coal Industry Teachers＇ College Huaibei 235000 China Department of Physics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China

We present the continuous state vector of the total coordinate of multi-partlcle and the state vector of their total momentum, respectively, which possess completeness relation in multi-mode Fock space by virtue of the integration within an order product （IWOP） technique. We also calculate the transition from classical transformation of variables in the states to quantum unitary operator, deduce a new multi-mode squeezing operator, and discuss its squeezing effect. In progress, it indicates that the IWOP technique provides a convenient way to construct new representation in quantum mechanics.

关键词： IWOP technique multipartite state representations squeezing operator

Phase Properties of Two-Mode Squeezing-Rotating Entangled Representation

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Communications in Theoretical Physics 2006年第5X期46卷 838-842页

作者： YUAN Hong-Chun LI Heng-Mei qi kai-guo Department of Physics Huaibei Coal Industry Teachers' College Huaibci 235000 China Department of Physics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China

By virtue of the squeezing-rotating entangled representation, we mainly establish the new two-mode phase operator and phase angle operat, or, which is a general form including the foregoing formalist in two-mode Fock space. In addition, the corresponding phase distribution function is given in the entangled representation. In terms of this definition, we also analyze the phase behavior of some simple two-mode states such as squeezing-rotatlng coherent state, squeezing-rotating vacuum state, and so on. It is found that the results exactly agree with the foregoing phase theory.

关键词： phase operator phase angle operator phase distribution function squeezing-rotating entangled representation

Signal Analysis by New Mother Wavelets

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Communications in Theoretical Physics 2009年第6期51卷 1010-1012页

作者： NIU Jin-Bo FAN Hong-Yi qi kai-guo Department of Physics University of Science and Technology of China Hefei 230026 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

Based on the general formula for finding qualified mother wavelets [Opt. Lett. 31 （2006） 407] we make wavelet transforms computed with the newly found mother wavelets （characteristic of the power 2n） for some optical Gaussian pulses, which exhibit the ability to measure frequency of the pulse more precisely and clearly. We also work with complex mother wavelets composed of new real mother wavelets, which offer the ability of obtaining phase information of the pulse as well as amplitude information. The analogy between the behavior of Hermite Gauss beams and that of new wavelet transforms is noticed.

关键词： mother wavelet complex Mexican Hermit-Gauss

Climate change impacts the distribution of Quercus section Cyclobalanopsis(Fagaceae),a keystone lineage in East Asian evergreen broadleaved forests

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Plant Diversity 2023年第5期45卷 552-568页

作者： Lin Lin Xiao-Long Jiang kai-qi guo Amy Byrne Min Deng School of Ecology and Environmental Sciences Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Institute of BiodiversityYunnan UniversityKunming 650500YunnanChina Laboratory of Ecology and Evolutionary Biology State Key Laboratory for Conservation and Utilization of BioResources in YunnanYunnan UniversityKunming 650500YunnanChina College of Forestry Central South University of Forestry and TechnologyChangsha 410004HunanChina Shanghai Chenshan Botanical Garden Shanghai 201602China The Morton Arboretum LileIL 60532-1293USA

East Asian evergreen broadleaved forests(EBFLs) harbor high species richness,but these ecosystems are severely impacted by global climate change and *** and managing EBLFs requires understanding dominant tree distribution *** this study,we used 29 species in Quercus section Cyclobalanopsis-a keystone lineage in East Asian EBLFs-as proxies to predict EBLF distribution dynamics using species distribution models(SDMs).We examined climatic niche overlap,similarity,and equivalency among seven biogeographical regions’ species using’ecospat’.We also estimated the effectiveness of protected areas in the predicted range to elucidate priority conservation *** results showed that the climatic niches of most geographical groups *** western species under the Indian summer monsoon regime were mainly impacted by temperature factors,whereas precipitation impacted the eastern species under the East Asian summer monsoon *** simulation predicted a northward range expansion of section Cyclobalanopsis between 2081 and 2100,except for the ranges of the three Himalayan species analyzed,which might shrink *** greatest shift of highly suitable areas was predicted for the species in the South Pacific,with a centroid shift of over 300 ***,only 7.56% of suitable habitat is currently inside protected areas,and the percentage is predicted to continue declining in the *** better conserve Asian EBLFs,establishing nature reserves in their northern distribution ranges,and transplanting the populations with predicted decreasing numbers and degraded habitats to their future highly suitable areas,should be high-priority objectives.

关键词： Species distribution model(SDM) East Asian tropics and subtropics Biodiversity conservation Distribution dynamics Global climate change

Influence of filling atoms on radial collapse and elasticity of carbon nanotubes under hydrostatic pressure

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Science Bulletin 2015年第17期60卷 1509-1516页

作者： Zhi-De Han Cui-Cui Ling qi-kai guo Hai-Peng Lu Hong-Guang Sui Jiao-Jian Yin Long-Jiang Deng College of Science China University of Petroleum National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of China State Key Laboratory of Heavy Oil Processing China University of Petroleum

Using molecular mechanics and molecular dynamics simulations, we focus on the influence of filling atoms on radial collapse and elasticity of single-walled carbon nanotubes(SWNTs). It is shown that the filled argon(Ar) and silicon(Si) atoms can effectively improve the resistance to high pressure and radial elasticity of SWNT, which may attribute to the strong repulsive force from the filled Ar(Si) atoms. However, due to the strong interaction of Cu atoms, filling Cu atoms deteriorate SWNT's radial elasticity. In addition, it is found that the phase transitions of the atoms filled in SWNT occur in the process of loading and unloading pressure, so that the electrical properties of the SWNTs filled with atoms change in the process of loading and unloading pressure. In view of the restorability of SWNT filled with Si atoms upon unloading, the filled SWNTs can be used to develop a new class of nano-electronic devices such as pressure sensor, relay and memory, etc.

关键词： Carbon nanotubes Filling Radial collapse Hydrostatic pressure

Practical approach for detecting k-nonseparability of multipartite quantum states

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 32-48页

作者： Jie guo Jinchuan Hou Xiaofei qi Kan He College of Mathematics Taiyuan University of Technology School of Mathematics and Statistics Shanxi University Key Laboratory of Complex Systems and Data Science of Ministry of Education Shanxi University

The instantaneous detection of entanglement in quantum states poses a significant challenge in the fields of quantum computation and quantum information, and there are no practical methods or tools to complete this task satisfactorily so far. We propose a sufficient and necessary criterion of k-nonseparability for any n-partite finite or infinite dimensional systems, 2 ≤ k ≤ n. This criterion serves as the foundation for a practical scheme designed to detect entanglement and k-nonseparability across multipartite finite-dimensional systems. To exemplify the application of our scheme, we have developed a software tool that facilitates swift and precise identification of entanglement, k-nonseparability, and genuine entanglement within n-qubit systems, specifically tailored for systems with 2 ≤ n ≤ 4.

关键词： multipartite systems entanglement states entanglement witnesses ${\bm~k}$-nonseparability

Multilevel analysis of the central-peripheral-target organ pathway:contributing to recovery after peripheral nerve injury

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Neural Regeneration Research 2025年第10期20卷 2807-2822页

作者： Xizi Song Ruixin Li Xiaolei Chu qi Li Ruihua Li qingwen Li kai-Yu Tong Xiaosong Gu Dong Ming Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjinChina Haihe Laboratory of Brain-Machine Interface and Human-Machine Fusion TianjinChina Department of Rehabilitation Tianjin University Tianjin HospitalTianjinChina Department of Hand Microsurgery Tianjin University Tianjin HospitalTianjinChina School of Exercise and Health Tianjin University of SportTianjinChina Department of Biomedical Engineering the Chinese University of Hong KongHong Kong Special Administrative RegionChina

Peripheral nerve injury is a common neurological condition that often leads to severe functional limitations and *** on the pathogenesis of peripheral nerve injury has focused on pathological changes at individual injury sites,neglecting multilevel pathological analysis of the overall nervous system and target *** has led to restrictions on current therapeutic *** this paper,we first summarize the potential mechanisms of peripheral nerve injury from a holistic perspective,covering the central nervous system,peripheral nervous system,and target *** peripheral nerve injury,the cortical plasticity of the brain is altered due to damage to and regeneration of peripheral nerves;changes such as neuronal apoptosis and axonal demyelination occur in the spinal *** nerve will undergo axonal regeneration,activation of Schwann cells,inflammatory response,and vascular system regeneration at the injury *** damage to target organs can occur,including skeletal muscle atrophy and sensory receptor *** then provide a brief review of the research advances in therapeutic approaches to peripheral nerve *** main current treatments are conducted passively and include physical factor rehabilitation,pharmacological treatments,cell-based therapies,and physical ***,most treatments only partially address the problem and cannot complete the systematic recovery of the entire central nervous system-peripheral nervous system-target organ ***,we should further explore multilevel treatment options that produce effective,long-lasting results,perhaps requiring a combination of passive(traditional)and active(novel)treatment methods to stimulate rehabilitation at the central-peripheral-target organ levels to achieve better functional recovery.

关键词： central nervous system central peripheral target organ multilevel pathological analysis nerve regeneration peripheral nerve injury peripheral nervous system target organs therapeutic approach

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散斑位移法测量激光高斯光束的空间分布

强激光与粒子束 2000年第2期12卷 141-144页

作者：姚焜侯碧辉张增明齐开国陈裕涛中国科技大学天文与应用物理系合肥230026 中国科技大学物理系合肥230026 中国工程物理研究院应用电子学研究所国家强辐射重点实验室绵阳621900

提出一种测量激光高斯光束空间分布特征的新方法散斑位移法。该方法利用光传播的菲涅尔衍射公式和光场的统计规律 ,给出散斑场光强在散射体位移前后的高斯光束相关函数的表达式。测出相关函数在光路上某一位置的数值 ,并由此同时求出高... 详细信息

提出一种测量激光高斯光束空间分布特征的新方法散斑位移法。该方法利用光传播的菲涅尔衍射公式和光场的统计规律 ,给出散斑场光强在散射体位移前后的高斯光束相关函数的表达式。测出相关函数在光路上某一位置的数值 ,并由此同时求出高斯光束的束腰位置和大小。

关键词：高斯光束激光器激光散斑位移法空间分布