We study the statistics of photon emission from three-level single molecule systems.The generating function method [Y.Zheng and F.L.H.Brown, Phys.Rev.Lett.90, 238305 (2003)] is used to calculate steady state absorption line shapes and Mandel's Q parameter as a function of excitation frequency, as well as the time dependence associated with approach to the steady state.The line shape calculations confirm known results derived via other methods, while the Q parameter results display complex frequency dependences not amenable to simple interpretation.This study confirms the applicability of the generating function formalism to multilevel quantum systems, including the proper modeling of quantum coherence effects.
展开▼
机译：我们研究了三能级单分子系统的光子发射统计数据。使用生成函数方法[Y.Zheng and FLHBrown，Phys.Rev.Lett.90，238305（2003）]来计算稳态吸收线的形状和曼德尔的Q参数是激励频率的函数，以及与达到稳态的时间相关的函数。线形计算确认了通过其他方法得出的已知结果，而Q参数的结果则显示了复杂的频率相关性，因此不易简单解释这项研究证实了生成函数形式主义对多级量子系统的适用性，包括对量子相干效应的正确建模。
展开▼
