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Quantum Teleportation via Hybrid Entangled States

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Communications in Theoretical Physics 2007年第3X期48卷 441-444页

作者： XIONG wen-Yuan wang xin-wen Department of Electronic Engineering and Physics Hunan University of Science and Engineering Yongzhou 425100China

In this paper, we study quantum teleportation of atomic states via a hybrid entangled state （HES） involving an atom and a cavity field. And we investigate how to implement controlled phase （CP） gates between atomic internal states and coherent states of cavity field. We also discuss the methods of distinguishing coherent states [±α〉 in a cavity. Finally, a brief discussion about the feasibility of this scheme in experiment is presented.

关键词： hybrid entangled states quantum teleportation controlled phase gates discrimination of cavityfield coherent states

Preparation of a New Type of Multiqubit Entangled States in Cavity QED

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Communications in Theoretical Physics 2008年第9期50卷 738-740页

作者： XIONG wen-Yuan wang xin-wen XIA Li-xin Department of Electronic Engineering and Physics Hunan University of Science and Engineering Yongzhou 425100 China Department of Physics Beijing Normal University Beijing 100875 China Department of Physics Tsinghua University Beijing 100084 China

Recently Yang,Chu,and Han [***.A 70 (2004) 022329] presented a new type of multipartiteentangled states for implementing efficient many-party controlled teleportation of multiqubit quantum *** propose a simple scheme for preparing such a type of multi-atom entangled states in cavity quantum electrodynamics(QED).The scheme involves atom-cavity interaction with large detuning,and is immune to the cavity decay and thethermal field *** practical analyses show its availability with the present technology.

关键词： new type of entangledsates cavity QED controlled quantum communication

A Feasible Scheme for Teleportation of Multi-atom Cat-like States in Thermal Cavities

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Communications in Theoretical Physics 2006年第4期45卷 625-629页

作者： wang xin-wen LIU Xiang Department of Physics Hunan Normal University Changsha 410081 China Department of Physics Hunan University of Science and Engineering Yongzhou 425006 China

An experimentally feasible scheme for implementing teleportation of multi-atom cat-like states in cavity QED is proposed. In the scheme the atoms interact simultaneously with a highly detuned cavity mode and are driven by a strong classical field, and the atomic state evolution is independent of cavity field state. Thus the scheme is insensitive to both the cavity decay and the thermal field, which is of importance from the experimental point of view. All the orthogonal and complete multi-atom GHZ states can be exactly distinguished only by one step, so our scheme can also be used for other purposes such as dense coding using multi-atom GHZ states as quantum channels.

关键词： teleportation multi-atom cat-like state multi-atom GHZ multi-atom GHZ discrimination

Scheme for Teleportation of a Multipartite Quantum State by Using a Single Entangled Pair as Quantum Channel

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Communications in Theoretical Physics 2007年第2期47卷 257-260页

作者： wang xin-wen wang Zhi-Yong XIA Li-xin Department of Physics Hunan University of Science and Engineering Yongzhou 425100 China Department of Physics Hengyang Normal University Hengyang 421008 China

We present a theoretical scheme for perfect teleportation of an unknown multipartite two-level state by a single EPR （Einstein-Podolsky-Rosen） pair, and then generalize it to multilevel, i.e., an N-quNit state can be teleported by a single quNit entangled pair, with additional local unitary operations. The feature of the scheme is that teleporting a multipartite state with a reduced amount of entanglement costs less classical bits.

关键词： EPR pair quNit entangled pair N-qubit cat-like state N-quNit cat-like state teleportation

The effects of intraspecific competition and light transmission within the canopy on wheat yield in a wide-precision planting pattern

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Journal of Integrative Agriculture 2020年第6期19卷 1577-1585页

作者： LIU xin wang wen-xin LIN Xiang GU Shu-bo wang Dong College of Agronomy Shandong Agricultural University/State Key Laboratory of Crop BiologyMinistry of Science and Technology/Key Laboratory of Crop Ecophysiology and Farming SystemMinistry of AgricultureTai'an 271018P.R.China

The wide-precision planting pattern has become widely used in the North China Plain as a practice for increasing wheat ***,the effects of tilled ng developme nt and light tran smissi on within can opy on wheat yield un der differe nt sowi ng widths have not bee n clearly ***,a two-year experime nt was con ducted,in cludi ng four different seeding widths(6 cm,W6;8 cm,W8;10 cm,W10;12 cm,W12)and the traditional planting pattern with seeding width of 4 cm(W4).The results indicated mainly positive effects by the reduced intraspecific competition,specifically all three yield components of W6 and W8 were higher than those for *** configurations with more than 10-cm seeding width were mainly affected by the negative effect of a relative homogeneous canopy,leading to the weakened light transmission,leaf senescence,and reduced grain number per ***,the yields of W6 and W8 were significantly higher than that of W4,whereas the yield in W12 was lower(though not significantly)than *** wheat production,therefore,the appropriate seeding width of 6-8 cm is recommended for farmers,whereas the too wide seeding width,with more than 10 cm,should be avoided.

关键词： light tra nsmissi on seedi ng width tillers nu mber win ter wheat yield comp orients

Two Feasible Schemes for Preparing Cluster States with Ion-Trap Setup

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Communications in Theoretical Physics 2008年第5期49卷 1217-1220页

作者： wang xin-wen CAO Shuai XIA Li-xin Department of Physics Hunan University of Science and Engineering Yongzhou 425100 China College of Science South China Agricultural University Guangzhou 510642 China Department of Physics Tsinghua University Beijing 100084 China

We present two schemes for preparing cluster states with atomic qubits in an ion-trap system. In the first scheme an auxiliary atomic level is needed. While in the second scheme an additional classical driven field is used, and the multi-ion cluster states can be generated by one step. Both the schemes are insensitive to thermal motion of the ions, all the facilities used in them are well within state of the art.

关键词： ion-trap cluster states one-step implementation controlled phase gates

Generation of a Four-Particle Cluster State and Perfect Teleportation of an Arbitrary Two-Particle State in an Ion-Trap System

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Communications in Theoretical Physics 2009年第10期52卷 588-592页

作者： wang xin-wen YANG Guo-Jian Department of Physics and Applied Optics Beijing Area Major Laboratory Beijing Normal University Beijing 100875China

We propose a scheme for generating a four-particle cluster state in an ion-trap *** scheme isinsensitive to the thermal motion of the ions,and needs less operations than previous *** such a setup,we alsodemonstrate a procedure for perfectly teleporting an arbitrary two-particle state via a single multipartite entanglementchannel,a four-particle cluster state.

关键词： cluster state teleportation ion-trap

Synthesis and Properties of a Heteronuclear Ag(Ⅰ)/Ni(Ⅱ) Complex

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Chemical Research in Chinese Universities 2006年第3期22卷 283-286页

作者： wang Jiang-yun GU wen wang wen-zhen LIU xin LIAO Dai-zheng Department of Chemistry Nankai University Tianjin 300071 P. R. China

A complex, Ni （en）2Ag3 （CN） s （ en =ethylenediamine）, was obtained through the reaction of [ Ag （ CN ）2 ]^- units with Ni II -diamine cation C Ni （en）2]^2＋, and the structure was determined by single crystal X-ray diffraction. It is indicated that the complex has a 3D architecture through the silver-silver interactions and the bridging eyano groups. This complex displays interesting luminescent properties caused by argentophilieity at room temperature in solid state.

关键词： Single crystal X-ray diffraction Silver-silver interaction Argentophilieity luminescent property

Soil erosion of unpaved loess roads subjected to an extreme rainstorm event: a case study of the Jiuyuangou watershed on the Loess Plateau, China

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Journal of Mountain Science 2019年第6期16卷 1396-1407页

作者： YANG Bo wang wen-long GUO Ming-ming GUO wen-zhao wang wen-xin KANG Hong-liang ZHAO Man CHEN Zhuo-xin State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau Institute of Soil and Water ConservationNorthwest A&F UniversityYangling 712100China Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water ResourcesYangling 712100China Key Laboratory of Ecological Restoration of Mining Area in Northern Shaanxi Province Yulin UniversityYulin 719000China Yellow River Engineering Consulting Co. Ltd109 Jinshui RoadZhengzhou 450003China

Rainfall can cause serious soil loss in the Loess Plateau hilly and gully region, but little focus has been placed on the extreme rainstorm effects on unpaved loess road soil erosion. A field survey method was used to investigate the erosional effects of the '7·26' heavy rainfall event on unpaved loess roads in the Jiuyuangou watershed of the Loess Plateau, China. The results showed that the average and maximum widths of the eroded gullies that formed on the unpaved roads were 0.65-1.48 m and 1.00-3.60 m, respectively. The average and maximum depths of theeroded gullies were 0.42-1.13 m and 0.75-4.30 m, respectively. The average width-to-depth ratio was 1.31, indicating that the widening effect was greater than the downcutting effect in the eroded gullies. In addition, the gully density ranged from 0.07 to 0.29 m m-2, and the road surface dissection degree ranged from 0.03 to 0.41 km2 km-2. Eroded gullies generally developed at the slope toe of the cut bank side. The average eroded gully width and depth at turns in the road were 1.47-2.64 times and 1.30-3.47 times greater, respectively, than those in other road sections. The road erosion modulus increased from the upper section to the lower section of the roads. The average road erosion modulus of the study catchment was 235,000 t km-2. Turns in the road were associated with collapses, sinkholes and other gravitational erosion phenomena. The amount of road erosion under extreme rainfall conditions is mainly related to the interactions among road length, width, slope and soil bulk density. Our results provide a useful reference for developing further measures for preventing road erosion on the Loess Plateau.

关键词： Road erosion '7·26' extreme rainstorms Loess Plateau Gully development