When the two-mode fields are both strong, the effect of Stark shift on the spectrum is weak.

初始场较强时斯塔克效应对谱线的影响较弱。

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It is found that quantum erasing process can transfer part of entanglement between the atom and fields to two mode fields initially in the thermal states.

我们讨论了相位消相干对两模热场纠缠的影响，并且发现量子擦除过程能够把存在于原子和场中的部分纠缠转移到初始时的两模热场。

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