本文讨论了相位因子对相干态在时间演化中保持不变的充要条件所造成的影响。
In the paper, it has discussed the action of a phase on necessary and sufficient Condition of coherent state to remain its state on the time evolution.
将散粒噪声用于检测纠缠态对量子计算具有重要的意义，自旋相干输运的检测是自旋电子学的重要研究课题。
The entanglement detection based on the shot noise is important to the quantum computation, and the spin coherence transport detection is a necessary subject of spintronics.
利用压缩相干态的理论和有关性质，导出了压缩相干态下谐振子任意次幂的坐标算符矩阵元的表达式，并对所求的结果进行了讨论。
Using the theoretics and properties of squeezed coherent state, the matrix elements of any power of coordinate operator for harmonic oscillator is deduced; and the result is discussed.
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