通过纠缠交换来实现两个三态纠缠态粒子的量子几率隐形传态

提出了一种利用纠缠交换的方法来实现一未知的两个三态纠缠态粒子的量子几率隐形传态的方案.在此方案中发送者A lice只要进行两次B e ll态测量,并将测量结果通过经典信道告诉Bob,Bob根据接收到的信息即可通过相应的幺正变换来重建A lice要传输的量子态.     

基于二级GHZ态的有限级量子纯态的多方量子隐形传态

有限级未知量子纯态不仅可以通过共享的两级EPR纠缠态隐形传态到一组两级粒子上,而且可以在一定条件下在多方之间进行隐形传态.文中提出的方案表明N方可以利用处于二级最大纠缠Greenberger-Horne-Zeilinger态的(N M)·L(2L≥d1d2d3…dN,di为Ni所隐形传态的未知量子态的维数)个粒子把N个未知量子态隐形传态给M个其他方.也表明二级最大纠缠态粒子可以用来同时对两个量子态进行双向隐形传态.     

利用四粒子纠缠态对未知的两粒子态的概率的隐形传态

提出一个对两粒子态的概率的隐形传态方案,利用四粒子纠缠态作为量子信道,可以以最大为1/3的概率实现对未知量子态的隐形传输.     

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.     

通过一个EPR对和一个GHZ态实现任意两粒子态的概率传递

我们提出了一个非最大纠缠EPR对和一个GHZ态作量子通道实现一个任意两粒子量子态隐形传递的方案。利用Bell态测量和Hadamard门测量,如果接收者引入一个联合幺正变换,就能实现一个任意两粒子态的概率传递,这个联合幺正变换是唯一的。同时,我们还给出了实现该传态过程的量子电路。     

利用2个EPR对实现3粒子GHZ态的控制隐形传态

为了实现经济的控制隐形传态,提出一种利用2个部分纠缠EPR对实现3粒子GHZ态的概率隐形传输方案.该方案首先需要发送者向控制者申请量子信道,若控制者同意,才能通过纠缠交换,使发送者和接收者之间建立量子信道.然后发送者进行一次Bell基联合测量、两次H变换和两次单粒子测量.接收者根据发送者和控制者的测量结果,引入辅助粒子,进行两次控制非门操作和相应的幺正变换,就可以得到原始未知信息态的信息,传输成功的概率为4|a|~2|c|~2.该方案可以推广到N粒子GHZ态的控制隐形传输.若增加到N个EPR对为量子信道,还可以推广到(N-1)个控制者参与的N粒子GHZ态的控制隐形传输.该方案可以很好的应对一般的窃听方式.     

用非最大纠缠态实现三粒子部分纠缠态的量子受控传递

由于制备与传输中的环境耦合,现实中的纠缠态大部分是非最大纠缠态．在研究现有量子受控传递方案的基础上,提出了一种利用非最大纠缠态作为量子通道来几率地传输三粒子部分纠缠态的量子控制方案．在该方案中,选择量子通道中的一个粒子作为控制粒子,发送者进行一次Bell基测量和2次Hadamard门测量;控制者实施一次Hadamard门测量,并将他们的测量结果利用经典信道发给接收者;接收者根据他们的测量结果进行适当的幺正变换以及一些必要的投影测量就能得到待传的未知量子态．该方案是一种基于非最大纠缠态的几率受控的隐形传态方案,可以应用于远程量子计算、远程量子克隆、量子远程控制等．     

基于团簇态信道的双粒子纠缠态可控量子隐形传态

提出利用四粒子团簇态传送一个未知两粒子纠缠态从而实现可控量子隐形传态的方案,发送者对她自己拥有的3个粒子做一次三粒子纠缠完备基联合测量,控制者对其拥有的粒子作局域测量,接收者在控制者的帮助下对其自己拥有的两粒子做相应的幺正变换,即可重新构造出发送者要传送的未知态,完成了可控量子隐形传态.     

二粒态的概率隐形传态

量子隐形传态是量子信息学的一个重要组成部分,本文提出一个利用两个三粒子纠缠态作为信道的量子隐形传态方案,方案中一个两粒子态将被概率的传输。     

运用扩展的Bell测量实现三粒子任意态的量子隐形传态

提出一种运用扩展的Bell测量实现三粒子任意态的量子隐形传态方案,构建了64种正交的扩展Bell态,运用一个最大纠缠的六粒子量子态作为量子通道,在相互的经典通信和一些相应的单粒子幺正变换的协助下,信息的接受者Bob成功恢复了初始量子态,成功传态的总概率为1．     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that