一般W态传送原子态并用腔QED提纯非最大纠缠态

提出用一个任意三粒子非最大纠缠形态作为量子信道,将未知量子态传送给两个接收者中的任意一个,用腔量子电动力学技术Cavity—QED（Cavity quantum electrodynamics）对非最大纠缠态进行提纯,实现未知量子态的概率传送．分析了作为量子信道的纠缠态系数对于成功实现隐形传送的影响,并以原子与腔共振相互作用演化来代替复杂的幺正变换,让接收方通过经典信息重新构造出初始传送态,成功的几率取决于3个系数中2个比较小的系数．以现在的技术是可以实现的．     

任意两粒子态的概率隐形传输

利用部分纠缠的两粒子纠缠态及部分纠缠的三粒子W态作为量子信道,提出了对任意的两粒子态的概率隐形传态方案,其最大传输概率为2/3.     

利用三粒子部分纠缠GHZ态概率隐形传送三粒子GHZ态

提出利用一个三粒子部分纠缠GHZ态作为量子信道,实现三粒子GHZ态从发送者传送给两个接收者中任意一个的概率隐形传态方案.若发送者进行一次Bell测量和两次Hadamard门操作后,想得到所需传送的三粒子GHZ态的接收者端引进两个辅助粒子,进行两次控制-非操作,同时根据另一个接收者对手中粒子进行Hadamard门操作后的测量结果实施一个适当的幺正变换,可以一定的概率成功地隐形传送三粒子GHZ态.此方案可推广至隐形传送k粒子GHZ态,这时也只要用一个三粒子GHZ态作为量子信道,但想得到所需传送的k粒子GHZ态的接收者端需引进(k-1)个辅助粒子,进行(k-1)次控制-非操作.     

联合旋转噪声下单光子与两光子态的隐形传送

量子隐形传态在量子计算和量子通信方面有重要的应用。本文提出经由联合旋转噪声信道的单粒子态两粒子未知的非最大纠缠态的隐形传送协议。这两个协议也可以推广到多粒子态的隐形传态。     

三粒子W纠缠态的概率量子隐形传态

提出一个对未知三粒子W纠缠态的量子隐形传态方案.该方案用一个非最大GHZ纠缠态和一个非最大EPR纠缠态作为量子信道实现对未知经典W纠缠态的概率量子隐形传态和对未知一般W纠缠态受控的概率量子隐形传态.     

运用双通道实现任意两粒子量子态的传送

提出了一种利用非最大纠缠EPR(Einstein-Podolsky-Rosen)态和非最大纠缠GHZ(Greenberger-HorneZeilinger)态作为量子通道概率传送任意两粒子纠缠态的方案.经过贝尔态测量和Hadamard测量后,发送者将测量结果告知接收者,接收者需要引入一个辅助粒子,然后对他所拥有的粒子做形式唯一的联合幺正变换,再做一个简单的相对幺正变换调整符号,就可以概率实现纠缠态的隐形传送,通过数值计算,可以得出传态成功的概率.最后利用基本量子门电路,构建了实现任意两粒子纠缠态概率传送的量子逻辑电路.     

非最大量子纠缠信道的量子态传送——在腔QED系统中利用非最大三粒子纠缠GHZ态传送未知原子态

讨论在腔QED中如何利用非最大三粒子纠缠GHZ态实现未知单原子态、两原子纠缠态的概率隐形传送.在量子态传送过程中需要引入一个辅助粒子以解决使用非最大纠缠量子信道导致的态畸变问题.本方案在两原子与腔相互作用的整个过程中,由于经典场同时对两原子进行驱动,量子态的演化不依赖于腔场的态,因而不受腔泄漏和热腔场的影响.     

四粒子团簇态的量子隐形传态

该文以4个二粒子最大纠缠态作为量子信道,研究了Alice将一个未知的四粒子团簇态(clusterstate)传送到远距离的接收者Bob的隐形传态过程.由于四粒子团簇态的特殊性质,接收者Bob只须施行64种可能的局部酉变换便能接收到Alice传送的未知态,从而实现了四粒子团簇态的量子隐形传态.     

两个独立量子信道中一对量子纠缠态的隐形传送

从量子纠缠及量子态隐形传送的基本原理出发,简单介绍在一个量子信道中单粒子量子态的隐形传送,进而详细讨论在两个独立量子信道中一对量子纠缠态的隐形传送,寻找其中的规律,为以后热纠缠信道中隐形传送的研究提供理论基础。     

基于四粒子GHZ态的任意三粒子GHZ态量子隐形传送

量子隐形传态已成为量子信息学中的一个重要研究领域,笔者从节省量子纠缠资源的目的出发,通过极化分束器(PBS)将2个EPR对制备成单个四粒子GHZ纠缠态,并将此四粒子GHZ纠缠态作为量子信道,从而实现三粒子纠缠GHZ态的量子隐形传输.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-