量子态

Based on a method of operator and an analysis of Landau engener level , this paper obtains the characteristics of 2D electron gas.

应用算符的方法及通过朗道能级的分析，得出了二维电子气的能级特性，由此通过态密度、简并度的讨论，研究了半导体超晶格量子阱的原理及其广泛的应用。

One of the important questions in quantum information theory is how to judge whether two mixed states are equivalent under LUT.

对于给定的两个混合态，如何判定其在局域幺正变换下的等价性是量子信息理论的重要问题之一。

A series of reactions may occur when the nitrous acid and naphthalene inside the atmospheric aqueous phases is exposed to sunlight. This article devotes to investigating from a microscopic angle the reaction mechanism and kinetics of this system using laser flash photolysis technique with an excitation wavelength of 355nm. The main research results are listed as below:(1) The OH quantum yield FOH for the photolysis of HNO2 in the aqueous phase was determined to be 0.234 and the absorption spectrum of OH radical was recorded as well.

本文以激光闪光光解为主要研究手段，考察了大气液滴中的HNO2及HNO2+萘体系经355nm紫外光照射后发生的微观反应及其机理，结果表明：(1)液滴中的HNO2经355nm光照产生OH自由基的量子产额为FOH=0.234；以瞬态技术记录了水相中的OH自由基的吸收光谱。

The advantage is its ability to study spectrum and wave functions beyond the ground state.

蒙特卡罗哈密顿方法是研究量子理论的数值模拟新方法，其优点是可求出超出基态的能谱和波函数。

In chapter 4, we investigate quantum statistical properties of atoms and photons in interaction of lithium-7 atomic BEC in the ground-state hyperfine sublevel with lasers.

第4章研究处于基态超精细亚能级的〓锂原子BEC与激光场相互作用的量子统计性质。

Starting from the classical motion equation of a nondissipative mesoscopic inductive coupling circuit with source , the quantum fluctuation of the charge and current of the coupled circuit with source is evaluated in excitation state of squeezed vacuum state, and the results are discussed.

从无耗散的含源电感耦合电路的经典运动方程出发，在压缩真空态的激发态下求解了耦合电路电荷和电流的量子涨落，并对结果进行了讨论。

The deformed metal-SWNTs and metal-TCNTs can be transformed to semiconductor or insulator due to deformations resulting to variation of the atomic structure and the nearest-atom transfer integral having relation with the directions.Based on the Boltzmann transport equation and n - electronic energy dispersion relations for individual SWNTs, the theoretical model caculating the current and conductance of the SWNTs is deduced. The low-temperature conductances of undoping or doping SWNTs are studied numerically, the calculated results show that, for the doping SWNTs, the conductance is quantized, i.e.

我们从Boltzmann方程出发，并结合SWNTs的能量色散关系，导出了计算手性SWNTs电导或电流的理论模型，并分别对非掺杂和掺杂SWNTs的低温电导或电流进行数值计算，结果表明：对于非掺杂的SWNTs，其电导是量子化的，即电导随偏压或电子输运能量变化呈跃变的台阶式结构，这些结构随管径增大或温度升高变得不明显；对于掺杂SWNTs，当偏压为某些特定值V_i时，传导电流有跃变，且传导电流的大小、跃变周期及跃变幅度等不是完全由掺杂后的电子浓度决定的，而与管半径R及掺杂后Fermi能级附近的电子态密度有直接关系，随着温度的升高和管径的增大，跃变结构趋于平滑。

Entangled state ; muliti-qubit ; canonical form ; LU polynomial invariant ; SLOCC classification ; measure of entanglement

纠缠态；多量子比特；正则形式； LU多项式不变量；随机LOCC分类；纠缠度

The SU(1,1) Lie algebra is of great interest in quantum optics because it can characterize many kinds of quantum optics systems.

广义SU(1，1)相干态 SU(1，1)李代数能表示许多量子光学系统，所以它在这个领域内引起了人们极大的兴趣。

The ground state energy of the bound polaron is derived by using a linear combination operator and the perturbation method.

采用线性组合算符和微扰法，导出了量子点中束缚极化子的基态能量。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。