从含时微扰论的角度出发，重新求解了与玻色场相耦合的两态系统的动力学。
With the time-dependent perturbation theory, the dynamics of a two-level system coupled to an Bose field is revisited.
我们指出只有在激发比较弱时，这组方程才可近似为一组线性方程，电子空穴极化波才可以看作玻色场。
We point out that the equation can be approximated by a set of linear ones and the exciton polarization wave can be regarded as a Bose field only in the limit of low excitation.
本文应用平均场近似的方法，研究了弱耦合的三势阱中玻色-爱因斯坦凝聚的开关效应。
We propose a scheme utilizing mean-field approach to exhibits switch effect in a symmetrical Bose-Einstein condensates triple-well potential.
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