Correlation Functions Investigation of Single Quantum Tow-Levels and Tow-States Systems
单量子双能级系统和双态系统关联函数的研究

The three-level dye molecule single quantum system interacting with a cw laser field is investigated.The dynamic process of a single-molecule emitted photon is described by rate equations with absorbing boundary condition.It is demonstrated that the dynamics of the single-molecule processes and the statistics of time-resolved photon detection can be conveniently described in terms of renewal stochastic processes.The approach of calculating the correlation function by calculating the delay function that is an important physics quantity reflecting single quantum system dynamic process is given,and explicit expressions of correlation functions for two-levels and two-states systems are derived.This approach can be used for calculate dynamics parameter of molecular transition based on the fluorescence intensity correlation function.