arXiv:cond-mat/0307768 · Physical Review A
Photon statistics: Nonlinear spectroscopy of single quantum systems
Shaul Mukamel
Abstract
A unified description of multitime correlation functions, nonlinear response functions, and quantum measurements is developed using a common generating function which allows a direct comparison of their information content. A general formal expression for photon counting statistics from single quantum objects is derived in terms of Liouville-space correlation functions of the material system by making a single assumption that a spontaneous emission is described by a master equation.