查询词典 the quantum theory

Chapter Ⅱ reviews the general theory of Stark effect from our point of view. We describe three kinds of theoretical approaches about the treatment of ac Stark effect, which are time-dependent perturbation theory in semiclassical argument; Rabi methods in the semiclassical theory; dressedstate approach---quantum treatment of the light field. We also compare and discuss their scope of application.

第二章从我们自己的观点出发，总结了理论研究ac Stark效应的三种不同的方法：半经典的与时间有关的微扰方法；半经典的Rabi方法；对光场进行量子化处理的Dress态理论方法，比较并讨论了这三种方法各自的适用范围。

In this paper, physical origin and development of photonic crystal is investigated on the base of band theory of solid, electromagnetic field theory and light quantum theory respectively.

从固体能带论、麦克斯韦电磁场理论和光线量子论三个角度分别研究了产生光子带隙的理论基础和分析计算方法。

Quantum transition which causes the changes of the magnetopolaron lifetime is occurred in the quantum system due to the electron-phonon interaction and the influence of external temperature which is the magnetopolaron leap from the ground state to the first-excited state after absorbing a LO-phonon.

由于电子-声子相互作用和外界温度的影响导致了量子体系的跃迁，即磁极化子吸收了声子的能量由基态跃迁到激发态，造成极化子在基态的寿命发生变化。

Quantum adiabatic approximation is widely used in quantum physics.

量子绝热近似在量子物理学中有着广泛的应用。

In this scheme, the description of unitary evolution and quantum measurement is unified and the quantum control operation is represented by probability state transition. The algorithm works as follows. At first a measurement is applied on the system. If the state after collapse is not the desired eigenstate, then system evolution will go on. After a period of time, the system is measured again. The process will go on like this until we get the desired eigenstate by measurement. Finally the system is driven to the target state with admissible control as before.

4把本征态能控性概念进一步向前发展，提出了概率能控性的概念，将幺正演化和量子测量这两种量子控制手段统一的用概率状态转移来描述，并针对一类特殊的本征态能控的系统，提出了幺正演化和测量交替进行的量子反馈控制策略：如果单步测量所得到的本征态不是期望的本征态，则让系统以这一本征态作为新的初态进行下一步的幺正演化，然后在适当的时候再次测量，让系统塌缩到某一本征态，如此重复进行，直到达到期望的目标态为止。

Quantum Automata, a kind of mathematical model of quantum computation, has become an active research area gradually.

量子计算的一种数学模型——量子自动机的研究也成为一个日益活跃的研究领域。

We first review the basics of silicon-based donor spin quantum computer proposed by Kane, and how to control the system and construct the quantum gates, including Hadamard gate, CNOT gate and so on, in canonical gate decomposition ways.

首先，我们回顾肯恩的矽基底施子自旋量电脑系统，如何控制及构成量子逻辑闸，包括：阿达马逻辑闸、受控制否逻辑闸等等。

the establishment of glass resistive and capacitive coupling quantum dots model of the foundation, through analysis of the quantum dots electrostatic and chemical potential.

在建立玻璃中阻容耦合双量子点模型得基础，通过分析双量子点得静电能和化学势，讨论了化学势随外加偏压得变化和共振隧穿现。

The degeneration conditions for quantum gas system were analyzed based on statistical mechanics method. We point out the coincidence among these methods and the dependent properties of quantum gas system to its degeneration by comparing and analyzing these methods.

基于统计力学方法，从几种不同角度讨论了量子气体系统的简并条件，并通过分析和对比，指出它们本质上的一致性以及量子气体的性质对于其简并度的依赖关系。

In this thesis,we try to theoretically and experimentally investigate quantuminterference in atomic multi-level system and atom-molecule hybrid system to findthe conditions for generating quantum interference,the constructive or destructivefeature of interference,and the dependence of quantum interference on theenvironmental conditions.

本文旨在从理论和实验两方面对以往较少涉及的原子及原子—分子混合体系中多能级系统量子干涉效应进行研究，并着重探索量子干涉产生的条件、干涉相长或相消特性及其对外界条件的依赖关系等。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。