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Complete multiple round quantum dense coding with quantum logical network

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Chinese science Bulletin 2007年第9期52卷 1162-1165页

作者： LI ChunYan1,2.LI XiHan1,2.DENG FuGuo1,2.3,ZHOU Ping1,2.& ZHOU HongYu1,2.3 1 Key Laboratory of Beam Technology and material Modification of Ministry of Education,Beijing normal {2.,Beijing 100875,china 2.institute of low Energy nuclear {14.,and department of material science and {12.,Beijing normal {2.,Beijing 100875,china 3 Beijing Radiation Center,Beijing 100875,china Key Laboratory of Beam Technology and material Modification of Ministry of Education Beijing Normal University Beijing China institute of low Energy {2. physics and Department of Material Science and Engineering Beijing Normal University Beijing China Beijing Radiation Center Beijing China

We present a complete multiple round quantum dense coding scheme for improving the source ca-pacity of that introduced recently by Zhang et al. The receiver resorts to two qubits for storing the four local unitary ope... 详细信息

关键词：量子通信多重量子紧凑编码量子逻辑网络量子纠缠

Proton induced X-ray emission (PIXE) analysis of sources of porcelain body of Ru Guan and Jun Guan porcelains

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science china({2.,Mechanics & Astronomy) 2006年第4期49卷 411-420页

作者： LI Guoxia1, ZHAO Weijuan1, LI Rongwu2. SUN Hongwei1, GUO Min1, WANG Yanfang1, LIU Hui1, ZHAO Qingyun3, SUN Xinmin3, ZHAO Wenjun3 & CHENG Huansheng4.1. Faculty of Physical engineering, Zhengzhou university, Zhengzhou 4.0052.{2. 2. department of physics, Beijing normal university, Beijing 100875,{2. 3. institute of Cultural Relic and Archaeology of Henan Province, Zhengzhou 4.0000,{2. 4. institute of Modern physics, Fudan university, Shanghai 2.04.3,{2. Faculty of Physical engineering Zhengzhou University Zhengzhou China department of physics Beijing Normal University Beijing China institute of Cultural Relic and Archaeology of Henan Province Zhengzhou China institute of Modern physics Fudan University Shanghai China

34.samples of Ru Guan porcelain body and 50 samples of Jun Guan porcelain body (both kinds being in different body colors) were selected with the purpose of finding out the source of raw materials and their classification relationship so as to search for ways of non-destructive discrimination. Proton induced X-ray emission (PIXE) has been applied to these samples to determine their chemical elements. The data of seven major chemical elements collected from these samples were further studied through fuzzy cluster analysis. Results indicate that the origin of raw materials of Jun Guan porcelain body samples is comparatively more concentrated in certain places, while that of Ru Guan porcelain body samples is scattered about. The places of origin of raw materials of the majority of Ru Guan and Jun Guan porcelain body samples have something in common, but some differences still exist. It might be an important way for non-destructive discrimination among Ru Guan and Jun Guan porcelains by combining PIXE with fuzzy cluster analysis.

关键词： Ru Guan and Jun Guan porcelain, source of porcelain body, PIXE, fuzzy cluster analysis, non-destructive discrimination.

Synthesis of superheavy nuclei with ^(2.8)U target

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science china({2.,Mechanics & Astronomy) 2009年第10期52卷 1482-1488页

作者： LIU ZuHua1,3 & BAO JingDong2.4.1 Key Laboratory of Beam Technology and material Modification of Ministry of Education,Beijing normal {2.,Beijing {4.,china 2.department of physics,Beijing normal {2.,Beijing {4.,china 3 china {12. of Atomic Energy,Beijing 102.13,china 4.Center of Theoretical nuclear physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000,china Key Laboratory of Beam Technology and material Modification of Ministry of Education Beijing Normal University Beijing China china institute of Atomic Energy Beijing China department of physics Beijing Normal University Beijing China Center of Theoretical nuclear physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China

The production of superheavy nuclei with Z=108-116 via hot fusion reactions of the neutron-rich projectiles with 2.8U target is systematically *** results show that the production cross sections of superheavy nuclei do not decrease monotonously as the atomic number Z *** cross sections of the superheavy nuclei at Z = 112.and 115 are enhanced as compared with the whole Z-trend in synthesis of the superheavy nuclei,which clearly illustrates that the reactions with large negative Q-value and shell correction are more favorable to synthesize superheavy nuclei.

关键词： superheavy nuclei fusion reaction cross section 2.8U target

fMRI time series analysis based on stationary wavelet and spectrum analysis

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Progress in Natural science:materials International 2006年第11期16卷 1171-1176页

作者： ZHI Lianhe~ 1,2.3 , ZHAO Xia~4. SHAN Baoci~1**, PENG Silong~5, YAN Qiang~1, YUAN Xiuli~1 and TANG Xiaowei~ 1,6 (1. Key Laboratory of nuclear Analysis Techniques, institute of High Energy {2., Chinese Academy of {4.s, Beijing 10004., china 2. Graduate School of Chinese Academy of {4.s, Beijing 10004., china 3. department of {2., Zhoukou normal university, Zhoukou 4.6100, china 4. Research Imaging Center, university of Texas Health {4. Center, San Antonio, Texas 782.9, USA 5. National ASIC Design and engineering Center, institute of Automation, Chinese Academy of {4.s, Beijing 10004., china 6. department of {2., Zhejiang university, Hangzhou 31002., china) Key Laboratory of nuclear Analysis Techniques Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Graduate School of Chinese Academy of sciences Beijing 100049 China department of physics Zhoukou Normal University Zhoukou 466100 China Research Imaging Center University of Texas Health Science Center San Antonio TX 78229 United States National ASIC Design and engineering Center Institute of Automation Chinese Academy of Sciences Beijing 100049 China department of physics Zhejiang University Hangzhou 310027 China

The low signal to noise ratio (SNR) of functional MRI (fMRI) prefers more sensitive data analysis methods. Based on stationary wavelet transform and spectrum analysis, a new method with high detective sensitivity was developed for analyzing fMRI time series, which does not require any prior assumption of the characteristics of noises. In the proposed method, every component of fMRI time series in the different time-frequency scales of stationary wavelet transform was discerned by the spectrum analysis, then the components from noises were removed using the stationary wavelet transform, finally the components of real brain activation were detected by cross-correlation analysis. The results obtained from both simulated and in vivo visual experiments illustrated that the proposed method has much higher sensitivity than the traditional cross-correlation method.

关键词： fMRI stationary wavelet transform spectrum analysis data analysis.

Anomalous magnetotransport in LaMn_(1-x)Te_xO_3

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science china({2.,Mechanics & Astronomy) 2009年第7期52卷 987-992页

作者： TAN GuoTai1,2, CHEN ZhengHao3 & ZHANG XiaoZhong4.5 1 Key Laboratory of Beam Technology & materials Modification of the Ministry of Education, institute of low Energy nuclear {4., Beijing normal university, Beijing 100875, china 2 Beijing Radiation Center, Beijing 100875, china 3 Laboratory of Optical {4., institute of {4., Chinese Academy of {14.s, Beijing 100080, china 4.Key Laboratory of Advanced materials of the Ministry of Education, department of materials {14. and engineering, Tsinghua university, Beijing 100084. china 5 Beijing National Center for Electron Microscopy, Tsinghua university, Beijing 100084. china Key Laboratory of Beam Technology & materials Modification of the Ministry of Education Institute of Low Energy Nuclear Physics Beijing Normal University Beijing China Beijing Radiation Center Beijing China Laboratory of Optical physics Institute of Physics Chinese Academy of Sciences Beijing China Key Laboratory of Advanced materials of the Ministry of Education Department of Materials Science and Engineering Tsinghua University Beijing China Beijing National Center for Electron Microscopy Tsinghua University Beijing China

The LaMn1-xTexO3+δ (x=0.1, 0.2. 0.3) were synthesized using solid-state reaction method for the first time. X-ray photoemission spectrum (XPS) shows that in the samples the Te ions have a valence of Te4., and Mn3+ ions are partly converted into Mn2. and Mn4. due to the excess oxygen and Te doping. The magnetotransport associated with Mn2., Mn3+ and Mn4. was investigated. The experimental results show that the samples are insulator at 0 T when the amount of Mn3+ is much larger or less than the sum of Mn2. and Mn4.; by contrast, the samples display metal to insulator transition with increasing temperature when the amount of Mn3+ is close to the sum of Mn2. and Mn4.. These anomalous magnetotransport behaviors were analyzed in the frame of the double-exchange (DE) mechanism.

关键词： colossal magnetoresistance La-Te-Mn-O magnetotransport

The study of energy bands in nucleus ^(102.Zr

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science china({2.,Mechanics & Astronomy) 2010年第1期53卷 106-110页

作者： DONG GuoXiang 1,2., YU ShaoYing 1,2.3 , LIU YanXin 1 , SHEN CaiWan 1,2.4.& DONG YongSheng 1,2.5I School of {4., Huzhou Teachers College, Huzhou 313000, china 2.School of {4. and Information engineering, Zhejiang normal university, Jinhua 32.000, china 3 institute of Theoretical {14., Chinese Academy of {4.s, Beijing 100080, china 4.Center of Theoretical nuclear {14., National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, china 5 department of {14., Jining Teachers College, Jining 012.00, china School of science Huzhou Teachers College Huzhou China School of science and Information engineering Zhejiang Normal University Jinhua China institute of Theoretical physics Chinese Academy of Sciences Beijing China Center of Theoretical nuclear physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China department of physics Jining Teachers College Jining China

Theoretical calculations of the energy bands in nucleus 102.Zr are carried out by taking the projected shell model approach, which has reproduced the experimental data. In addition, by analyzing band-head energies, corresponding configurations of yrast band, quasi-particle rotational bands and side bands, we have worked out the microscopic formation mechanism of axially symmetric deformation bands: The low-excitation deformation bands are attributed to the high-j intruder states 1g 7/2.and 1h 11/2.in the N=4. 5 shells; the quasi-particles in the orbit v5/2.[532., v3/2.[4.1] and v3/2.[4.3] in particular play an important role in the deformation of 102.Zr.

关键词： projected shell model yrast band quasi-particle rotational band side band

Fuzzy cluster analysis of the provenance of ancient Yaozhou porcelain body

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Chinese science Bulletin 2003年第1期48卷 27-30页

作者： LI Guoxia1, ZHAO Weijuan1, LI Rongwu2. XIE Jianzhong1, FENG Songlin3, FAN Dongyu3, ZHANG Ying3, CAI Zhifang3, ZHUO Zhenxi4.& GAO Zhengyao1 1. Faculty of Physical engineering, Zhengzhou university, Zhengzhou 4.0052.{2. 2. department of physics, Beijing normal university, Beijing 100875,{2. 3. High Energy physics institute, the Chinese Academy of {14.s, Beijing 100080,{2. 4. Archaeology Research institute, Shanxi Province, Xian 710000,{2. Correspondence should be addressed to Li Guoxia (e-mail: Liguoxia@ ***) Faculty of Physical engineering Zhengzhou University Zhengzhou 450052 China department of physics Beijing Normal University Beijing 100875 China High Energy physics institute Chinese Academy of Sciences Beijing 100080 China Archaeology Research institute Shanxi Province Xi'an 710000 China

The technique of neutron activation analysis (NAA) has been employed to measure the content of 2. kinds of elements in the sample of Yaozhou porcelain bodies. Then a fuzzy cluster analysis has been conducted to the NAA data and a diagram of the dynamic fuzzy cluster analysis has been achieved. The results indicate that the batch of ancient Yaozhou porcelain bodies, which were of different overglaze color and were produced by different kilns during a period of over 800 years from the Tang Dynasty (618—907 A.D.) to the Yuan Dynasty (12.1—1368 A.D.), has shared a stable and concentrated raw material source. Provenances of por-celain bodies from different times, though having their spe-cific independence, enjoy a close relationship and are not far from one another. Provenances of porcelain bodies made during the Tang Dynasty and the Five Dynasties (907—960 A.D.) are found to be closer to one another, while those of the Song (960—12.9 A.D.) and the Jin Dynasty (1115—12.4.A.D.) are comparatively concentrated in certain areas and are dif-ferent from those of the Tang Dynasty. Both the tri-colored glazed pottery made in Yaozhou kilns during the Tang Dy-nasty and the Yaozhou porcelain bodies of the Tang period are from the same provenance.

关键词：古代姚州瓷胎窑址粘土矿原料来源中子活化分布模糊聚类分析

Further research on high-spin structure in ^(161)Lu

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science china({2.,Mechanics & Astronomy) 2008年第3期51卷 315-320页

作者： LI YanXia1,2.YU ShaoYing1,2.4.SHEN CaiWan1,5,LI XiaoWei6 & CHEN YongShou3,4.1 School of science,Huzhou Teachers College,Huzhou 313000,china 2.College of Mathematics,{2. and Information engineering,Zhejiang normal university,Jinhua 32.000,china 3 china institute of Atomic Energy,Beijing 102.13,china 4.institute of Theoretical {2.,Chinese Academy of sciences,Beijing 100080,china 5 Center of Theoretical nuclear {2.,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000,china 6 department of {2.,Chifeng university,Chifeng 02.001,china School of science Huzhou Teachers College Huzhou China College of Mathematics Physics and Information Engineering Zhejiang Normal University Jinhua China institute of Theoretical physics Chinese Academy of Sciences Beijing China Center of Theoretical nuclear physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China department of physics Chifeng University Chifeng China china institute of Atomic Energy Beijing China

The two-dimensional total routhian surface (TRS) calculations were performed to probe into the triaxial superdeformed characteristics of a strongly populated band X2.in 161Lu. This band was identified as a triaxial superdeformed band by using our TRS method. We also got its formation mechanics,i.e. the neutron-shell correction energy plays a crucial role,while the rotating energy and the deformation-driving effect of high j intruder orbit i13/2.also play an additional role.

关键词： TRS method triaxial superdeformation formation mechanism

Theory study of shapes in ^(187,189)Tl nuclei

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science china({2.,Mechanics & Astronomy) 2009年第6期52卷 818-821页

作者： LIU YanXin1, YU ShaoYing1,2.3, SHEN CaiWan1,5 & DONG YongSheng1,2.4.1 School of science, Huzhou Teachers College, Huzhou 313000, china 2.School of science and Information engineering, Zhejiang normal university, Jinhua 32.000, china 3 institute of Theoretical physics, Chinese Academy of sciences, Beijing 100080, china 4.department of physics, Jining Teachers College, Jining 012.00, china 5 Center of Theoretical nuclear physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, china School of science Huzhou Teachers College Huzhou China School of science and Information engineering Zhejiang Normal University Jinhua China institute of Theoretical physics Chinese Academy of Sciences Beijing China Center of Theoretical nuclear physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China department of physics Jining Teachers College Jining China

The nuclear shapes of 187,189Tl were investigated theoretically in this work. The total routhian surface (TRS) calculations were performed for N=106 and 108 isotopes of thallium (Z=81). The single-particle energies were obtained from the deformed Woods-Saxon potential, with the Lipkin-Nogami (LN) treatment of pairing. It is found that the collective oblate rotation coexists with the high-K prolate rotation. Superdeformed prolate rotation is included in this calculation.

关键词： nuclear shape oblate rotation prolate rotation