Spontaneous emission from two-level atoms near the plasmonic structure of a nanosphere above a film
作者单位：同济大学 MOE Key Laboratory of Advanced Micro-Structured MaterialsSchool of Physics Science and EngineeringTongji University
会议名称：《第十八届全国量子光学学术会议》
会议日期：2018年
学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学]
摘 要：With the help of the strong light-matter interaction between quantum emitters and the surface plasmons, control of spontaneously emitted light from single emitters at nanoscale is achievable. Placing quantum emitters close to metallic nanostructures leads to modified decay rates and Lamb shifts for single emitters, as well as collective decay rates and dipole-dipole shifts between emitters. The effective interaction Hamiltonian can be fully determined by the dyadic Green’s function of the tailored electromagnetic environment [1]. To investigate the effect of spatial nonuniformity of plasmonic structures on the decay process of two-level atoms, we calculate decay rates of one single atom or two atoms at various positions near a metallic nanosphere above a metallic film using a semianalytical method [2,3]. This model can be employed to simulate the scanning tunneling microscope（STM）-induced luminescence [4].