unitary evolution

Secondly , it goes against grand narration , especially against linear and simply unitary evolution of history .

其次，反对宏大叙事，尤其反对单线历史和简单的、线性的历史演进模式。

Based on a magnetic field controlled electron spin quantum system , utilizing the mechanism of realizing the unitary evolution of the quantum state through the quantum gate , an optimal control strategy to prepare an arbitrary quantum state is proposed .

针对以磁场为控制场的电子自旋量子比特系统，结合量子门实现量子态幺正演化的量子态调控机制，提出了一种量子比特系统任意量子态的最优制备策略。

Wei-Norman decomposition is a well known theory for solving matrix differential equations . The Schrdinger Equation with unitary evolution equations is a matrix differential equations , so Wei-Norman decomposition can be used for solving the multi-level quantum systems .

Wei-Norman分解对于分析矩阵微分方程的解是比较成熟的理论，含有幺正演化矩阵的薛定谔方程是矩阵微分方程，所以可以利用Wei-Norman分解来分析求出多能级量子系统的解。

Unitary time evolution as precession among these states .

处于这些态中进动的么正时间演化。

Invariant-Related Unitary Transformation Method and Evolution of the Third-Quantized Wave Function of the Universe

与不变量有关的幺正变换方法和三次量子化宇宙波函数的演化