标题： “强光-物质相互作用中二层近似”的依据 显示英文标题

标题： The justification of 'Two-Level Approximation' in strong light-matter interaction

摘要： 我们研究了额外第三能级对与相干场相互作用的双能级系统在旋转波近似不成立的强耦合 regime 中动态演化的影响。 我们发现额外能级对系统粒子数演化有显著影响。 我们的结果表明，在这种强光-物质耦合 regime 中，双能级模型不是一个好的近似。 我们进一步研究了双能级模型仍可成立的参数空间。 显示英文摘要

摘要： We investigate the influence of the additional third level on the dynamic evolution of a Two-Level system interacting with a coherent field in the strong coupling regime where Rotating Wave Approximation is not valid. We find that the additional level has great influence on the evolution of the system population. Our results show that the Two-Level model is not a good approximation in this strong light-matter coupling regime. We further investigate the parameter space where the Two-Level model can still be justified.