基于多模压缩系数对非对称EPR态的纠缠结构判定

多体连续变量纠缠态是量子信息中非常重要的核心资源.非对称EPR态是实验上可以产生的一类重要的多体连续变量纠缠态.我们利用多模压缩系数发展的判据微观地对四模非对称EPR态的纠缠结构进行了判定.研究表明压缩参数r取0到1时，四模非对称EPR态所有划分方式的子系统间都存在纠缠，且纠缠程度随着压缩参数r增大而增大.同时，对A,B模式上分别增加信道损耗时，发现四模非对称EPR态所有划分方式的子系统间的纠缠程度会减弱，但是依然存在纠缠.     

EPR纠缠对的测量理论

章利用量子力学的测量理论,将连续变量EPR纠缠态与分离变量的EPR纠缠态的描述很好的结合起来。说明了在对双模压真空态的其中一个模进行正交位相振幅分量的测量过程中,可迫使另一模制备到其相应的正交位相振幅分量的本征态上即单模压缩真空态。     

两体纠缠态的应用

给出了两体纠缠态的性质与产生方法,用正规乘积技术得到了两体与三体连续变量纠缠态在坐标表象下的分解形式,展现了它们的完全性与正交归一性,提出了用三个两体纠缠态作为通道传榆一种连续变量三体纠缠态的方案.     

基于多波混频的三体连续变量纠缠

基于多波混频参数相互作用,研究了一个五能级原子系综中的三体连续变量纠缠.其中,两个光场通过一个双通道Raman跃迁,以和模的形式组合成一个联合模与原子相互作用,这个联合模因外加相干场与第三个腔场介于混频参数相互作用,导致了3个腔场正交算符的方差和满足三体连续变量纠缠有效判据,从而实现了稳态三体连续变量纠缠.     

Ising模型的腔QED模拟和最大纠缠态的存储以及四体纠缠态的产生

提出了在腔中模拟Ising模型、存储最大纠缠态和产生的四体量子纠缠态的简单方案．单模腔中的两个二能级原子受到强经典驱动场的作用,在大失谐条件下,系统的有效哈密顿量和标准的Ising模型相同．这一系统可使初始处于Bell基的两原子始终处于最大纠缠态,其中两个Bell基是系统的本征态;另外两个Bell基仅需要对其中一个原子作局域操作,仍然保持最大纠缠态．这个系统与腔模和环境没有相互作用,可长时间存储原子纠缠态而不会发生退相干．此外,利用该模型可以提出制备四体纠缠态的方案,即由现存的两Bell态可以一步得到四体真正纠缠态;存在两个GHZ态的条件下,可以很容易得到四粒子的标准Cluster态,在该机制下制备四粒子标准Cluster态的成功几率为1．     

用正交压缩态光场产生连续变量类GHZ和类Cluster四组分纠缠态

设计了一种有效的连续变量类 GHZ和类Cluster四组分纠缠态光场的实验产生系统. 从理论上证明, 利用一对非简并光学参量放大器所产生的4个正交振幅和正交位相压缩态光场, 经由不同位相关系的线性光学变换, 可以按要求产生两种不同类型的四组分纠缠态. 推出了四组分Cluster态的完全不可分判据, 并计算了连续变量四组分纠缠态关联方差对光场初始压缩度、系统传输效率及零差探测效率的参量依赖关系.     

连续变量系统中准对称多模高斯态的纠缠

基于现今连续变量系统中高斯态纠缠的一些研究成果,利用负性对数为纠缠度量来讨论一个准对称的N模高斯态的纠缠问题.以一个准对称八模高斯态为例,寻找八模高斯态和与其对应的两模高斯态共变矩阵参数之间的解析关系.研究发现在多模高斯态对应两模高斯态的方案中由于省略了多模高斯态辛本征值的部分信息,导致这种方案虽然可以使多模高斯态对应为一个两模高斯态,但是这种对应关系不是唯一的,一个两模高斯态可以对应很多不同的多模高斯态,而且这些高斯态拥有着相同的纠缠信息.通过寻找八模高斯态与两模高斯态参数间的解析关系,研究发现只要确定辛本征值就能得到八模高斯态和两模高斯态参数之间的解析关系,按照这个思路可以得到N模高斯态与两模高斯态参数间的解析关系.     

用正交压缩态光场产生连续变量类GHZ和类Cluster四组分纠缠态

设计了一种有效的连续变量类 GHZ和类Cluster四组分纠缠态光场的实验产生系统. 从理论上证明, 利用一对非简并光学参量放大器所产生的4个正交振幅和正交位相压缩态光场, 经由不同位相关系的线性光学变换, 可以按要求产生两种不同类型的四组分纠缠态. 推出了四组分Cluster态的完全不可分判据, 并计算了连续变量四组分纠缠态关联方差对光场初始压缩度、系统传输效率及零差探测效率的参量依赖关系.     

利用推广的Jaynes-Cummings模型存储最大纠缠态及纠缠提纯

提出了利用推广的Jaynes—Cummings（J-C）模型存储最大纠缠态,在此模型中原子与腔模和环境没有相互作用,因此可长时间存储原子纠缠态而不会发生退相干。此外,利用此模型可对处于非最大纠缠两原子态进行纠缠提纯。     

量子隐形传送两体任意态的真实四体纠缠通道方案

提出了一种用真实的四体最大纠缠态实现两体任意量子态的隐形传送方案,构建了16个正交完备基矢,这些基矢都是真实的四体纠缠态,即不能写成直积的形式.该方案揭示了一种四体纠缠态的某种特殊纠缠属性,并表明从某种意义上来讲,还可以从这样的一个四体纠缠态中提取出2个Bell态的纠缠.     

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.     

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.     

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.     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

The Analects and the Moment in Peking——The influence of a Confucian education system on the personality formation,the way of thinking and the fate of the main characters

0.Preface China has long been boasting of its colorful and immense culture which comprises of Taoism,Confucianism and Buddhism.The interwoven influence among the religions on Chinese way of thinking,on the nation＇s behavior in their social life throughout the long history is beyond list.