双色驻波场中梯形三能级原子所受整流偶极力的涨落分析

本文基于文献1]利用双色驻波场作用于三能级原子获得宏观数量个光学波长上符号保持不变的整流偶极力的工作基础上,运用量子回归定理计算了所得整流偶极力在一个光学波长上的涨落.结果表明:原子偶极零点振动与光场幅度梯度相互作用引起的偶极力的涨落D1的值较大,是整流偶极力涨落的主要因素,且其随空间的变化规律与整流偶极力相似;原子偶极与真空零点振动相互作用导致偶极力的涨落Ds较小,几乎可以忽略不计.由于力的起伏所导致的加热效应不利于中性原子的偶极束缚6].

Analysis of the Fluctuation of the Rectified Dipole Force Received by a Ladder-Type Three-Level Atom in Bichromatic Standing Waves

On the previous work of acquiring an unidirectional dipole force over macro-quantitative optical wavelengths by imposing two standing waves of two different frequencies on an atom in the reference1],the fluctuation of the rectified dipole-force is derived and calculated by means of quantum aggressive theory.The results show that DI from the interaction between atomic dipole's zero-point fluctuation and the gradient of the light field amplitude has great magnitude being the dominant factor of the fluctuation and varies as the space extremely similar with the rectified dipole force;DS from the interaction between the atomic dipole and zero-point vacuum's vibration is so small that it can be neglected.The heating effect of the atom from the fluctuations is harmful for the atom's trapping by means of dipole force.