查询词典 quantum physics

The influences of the external magnetic field on the properties of the excited state of the polaron in a parabolic quantum dot are studied by using the linear combination operator and the unitary transformation method, the relation of the first internal excited state energy E1, excited energy △E and the resonance frequency ω of both the strong-and weak-coupling polaron with the effective confinement length l0 of the quantum dot, the electron-phonon coupling strength α and external magnetic field B are derived.

采用线性组合算符和幺正变换方法研究了外场对抛物量子点中极化子的激发态性质的影响，导出了强、弱耦合情况下极化子的第一内部激发态能量E1、激发能量△E、共振频率ω与量子点的有效受限长度l0、电子－声子耦合强度α以及外场B的关系。

The unitary transformation of quantum computing process not only guarantees the reversibility of computing, at the same time it naturally produce the parallelism of computing. All these will greatly lower computing complexity, make the unrealizable computing on classical computer realizable on quantum computer.

量子计算过程的幺正性不但保证了计算的可逆性，同时也自然的产生了计算的并行性，这将极大的降低计算复杂度，使原先在经典计算机上难以实现的运算在量子计算机成为可能。

The computational power of the quantum neuron is explored. Numerical and graphical results show that this single quantum neuron can perform XOR function unrealizable with a classical neuron and has the same computational power as the two-layer NN, it can be used to realize nonlinear mapping.

应用量子计算方法分析了该量子神经元模型的量子逻辑运算功能，分析和实验证明单个量子神经元能实现经典神经元无法实现的XOR函数，并具有与两层前向神经网络相当的非线性映射能力。

In this thesis, we mainly discuss the quantum Zeno effect and quantum anti-Zeno effect related to different measurement problem.

在这篇论文里，我们注重讨论了通过不同的测量手段所获得的量子Zeno效应以及反量子Zeno效应。

With these theories, we can estimate the error of adiabatic approximation and calculate the evolution of the quantum states in cases when quantum adiabatic approxi-amtion is not appliable.

利用非绝热跃迁理论，人们还可以在许多情况下有能力解析的估计绝热近似产生的误差。

Because of its unique structure, Nano-particle shows its small dimension effect, quantum effect, area effect, macroscopic quantum tunnel effect, it displays special function in optics, electrics, calorifics, magnetics, absorption, reflection, adsorption, Catalyzing and alkaloid etc.

纳米微粒因其独特的结构状态，产生出小尺寸效应、量子尺寸效应、面积效应、宏观量子隧道效应等，从而使纳米材料显现光、电、热、磁、吸收、反射、吸附、催化以及生物活性等特殊功能。

By making use of the quantum canonic ensemble theory,the quantum fluctuations of a mesoscopic RLC circuit in the mixed state have been studied.

利用量子正则系综理论研究了介观RLC电路在混合态下的量子涨落。

The dashes-in-a-well active region consists of 5 stacks of InAs quantum dashes embedded in compressively strained Al0.20Ga0.16In0.64As quantum wells separated by 30-nm undoped tensile-strained Al0.28Ga0.22In0.50As spacers on both sides of the DWELL.

Dashes-in-a-well 作用区域结构包括了五层受压应变的 AlGaInAs 量子井包覆的砷化铟量子段，外围有30奈米受张力应变的 AlGaInAs 层。

The quantum size effect of a very small thickness circular disclike GaAs quantum dot on exciton's ground state binding energy and the electron-hole distance are studied by using calculus of variations.

利用变分法研究了有很小厚度圆盘形GaAs量子点模型中激子的基态结合能，及电子-空穴间距随量子点尺寸变化的规律。

Quantum key distribution produces and releases key by making use of quantum mechanics principle,to solve the insuperably limitation of key distribution in classical cryptography,and guarantees the absolute security of the cryptographic key.

量子密钥分发系统是利用量子力学的基本原理来产生和发布密钥，以解决经典密码学在密钥分发方面存在的无法克服的缺陷，从而保证密钥在发布过程中的绝对安全，进而实现通信双方所交换信息的绝密。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。