其次，给出量子相干振荡的标准量子力学理论，它既适用于宏观系统，亦适用于微观和介观系统；
Secondly, a standard quantum mechanical formalism of quantum coherent oscillation is given, which apply either to macroscopic systems, or to micro- and mesoscopic systems.
研究结果表明，量子点中的相干自旋振荡可以导致自旋电流的产生。
The coherent spin oscillations in the dot provide a source for generating spin current.
振荡周期随耦合强度增大而减小，说明声子将导致量子比特相干性降低；
The oscillating period decreased with increasing, the electron-LO-phonon coupling strength, and it showed that the existence of phonon resulted in decreasing the coherence of qubit.
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