论文标题
具有各种后坐力参数的原子的子多普勒冷却的极限
Limits of sub-Doppler cooling for atoms with various recoil parameter
论文作者
论文摘要
我们通过直接求解由反向传播波产生的站立光场中的原子密度矩阵的量子动力学矩阵来对各种原子进行详细分析。已经证明，极化梯度冷却效应对原子后坐力参数（后坐力与自然线宽的比率）敏感，该参数与子多普勒冷却的限制，并允许概述众所周知的子多普勒冷却理论的极限。我们还为众所周知的$σ_+ - σ_- $和$ lin \ perp lin $配置提供了比较。
We perform detailed analysis of sub-Doppler cooling limits for various atoms by direct solving quantum kinetic equation for atom density matrix in standing-wave light field generated by counterpropagating waves. It was demonstrated that the polarization gradient cooling effects are sensitive to atom recoil parameter (the ratio of recoil energy to natural linewidth) that results to limitation of sub-Doppler cooling and allows to outline the limits of well-known sub-Doppler cooling theory. We also give a comparison the cooling limits for well-known $σ_+-σ_-$ and $lin\perp lin$ configurations.
