判断存在手性碳原子的环己烷R/S的简便方法

归纳阐述了存在手性碳原子的环己烷判断R/S的方法为"环己烷的构象转为费歇尔时,环碳在横向,编号61234561a,e,上下交替换,奇碳a上e下,偶碳e上a下.对映体椅型结构互转变,编号顺变逆,ae,键基团位不变,-对映构型只是R变S,S变R",并应用举例.     

利用Excel快捷处理钠原子光谱实验数据

用Excel处理钠原子光谱实验数据,利用其"单变量求解"功能求量子缺,方法简单、快捷,且无需里德伯表.     

超冷里德堡原子的产生以及探测

利用激光冷却与俘获技术获得冷原子,由双光子激发产生超冷里德堡原子,利用场电离法得到了里德堡原子ns和nd态的离子谱图;再将激光波长固定在6p3/2—34d态的共振跃迁线上,得到了离子和里德堡原子的TOF（TimeofFlight）图,并对实验结果做了分析。     

Optimized search over the Gabor dictionary for note decomposition and recognition

Performing real-time note detection of multiple audio sources, such as guitar signals, is a difficult task due to the complex nature of these signals. For instance, guitar notes are close in pitch and the harmonic overtones of each note are strongly interlaced, thus preventing standard filtering techniques. In order to accomplish note detection, a harmonic matching pursuit algorithm has been used to decompose an audio signal in terms of elementary waveforms called harmonic atoms. These atoms are derived from the standard matching pursuit algorithm, and are part of an extended and overcomplete Gabor dictionary. In this paper, the search over Gabor dictionary is optimized by using signal modeling of the guitar signal in order to pre-calculate a parameter set; therefore avoiding a costly search over the extended Gabor dictionary. The parameter set defined for the proposed algorithm includes time-location, decay rate, frequency, scale and phase, which are calculated at the onset of each note played. This optimized algorithm is demonstrated through synthesized and real guitar signal examples. Considerable computational savings of this proposed algorithm over the harmonic matching pursuit algorithm are achieved.     

原子间偶极相互作用对双原子偶极矩高阶压缩的影响

研究了两个全同的二能级原子与单模真空辐射场相互作用系统中原子偶极矩的高阶压缩效应.通过数值计算,讨论了原子间偶极相互作用对原子偶极矩高阶压缩的影响.     

克尔介质腔中耦合三能级原子与光场相互作用系统的动力学行为

The Hamiltonian of coupled three-level atoms interacting with light field in the cavity filled with Kerr-like medium is derived. A simplified analytic solution to the Schrodinger equation of the system is obtained. The case of A type atom with degenerate lower levels is discussed in detail. It is shown that the coupling strength between atoms and Kerr coefficient affect the system＇s dynamic behaviors, especially the modulation period and oscillation frequency of the squeezing parameters of the field and the collective dipole moment. Dynamic behaviors of the system are sensitive to the initial state of atoms.     

光谱化学序列与配位原子的价层电子结构

晶体场理论的主要缺点是忽略了配位原子的价层电子结构特征，因而不能解释光谱化学序列．在考查光谱化学序列中配体配位原子的丰径大小及其价层电子结构特征的基础上。提出了配位原子的价层电子——中心原子d电子互斥模型，用以说明配体在光谱化学序列中的位序．还探讨了该互斥模型与分子轨道理论都可以说明光谱化学序列的原因．     

瓜环诱导咖啡因室温磷光的研究

基于瓜环-磷光体-重原子微扰剂形成三元包络物,在亚硫酸钠除氧条件下诱导产生咖啡因室温磷光做了研究.并且针对体系的影响因素:重原子、Q[6]、亚硫酸钠用量、放置时间长短和最佳pH范围等做了较详细的研究.此外还对体系的分析性能做了测试,初步建立了检测咖啡因的室温磷光分析方法.     

利用二能级原子与量子化光场实现控制Z门

文章提出一种利用二能级双原子与量子化光场的相互作用系统实现控制Z门的设计方案。研究结果表明:量子化光场初始时刻制备于相干态,双原子处于叠加态,在大失谐相互作用情况下,控制光场与叠加双原子的相互作用时间,就可以实现控制Z门。     

利用腔QED制备多原子的W纠缠态(英文)

研究了如何利用腔QED通过拉曼跃迁制备多原子的W纠缠态.本制备方案在操作期间不涉及腔-光子布居,且对腔衰减不敏感.另外,还指出了在现有的条件下,该方案易于操作.