本文简单叙述了决定介观体系尺寸的退相位长度的物理含义，以及目前在介观和低维体系中值得关注的几个物理问题。
The meaning of dephasing length, which determines the size of a mesoscopic system, and several important topics in the physics of mesoscopic and low-dimensional systems are described.
研究了存在相位退相干时原子与光场相互作用的纠缠演化和保持。
We investigate the time evolution of the entanglement in the interacting system of a single two-level atom and a single mode coherence field with phase decoherence.
平均保真度也可以通过调节相位退相干和失谐得到提高。
The average fidelity can be improved by adjusting phase decoherence and detuning.
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