Abstract
We present a method of the double-sided Feynman diagram for studies of quantum interference phenomena such as electromagnetically induced transparency, interacting dark resonance, electromagnetically induced absorption, and others in more complex schemes. This method not only provides an alternative to predict the phenomena, but also clearly reveals their physical pictures. Complex schemes that several coherent fields form a chain can be efficiently analyzed with the method. In this work, we have derived role of spontaneous coherence transfer in the propagator of a double-sided Feynman diagram, and demonstrated the systematic approach of the diagram to predict several examples of quantum interference phenomena. Our predictions are in agreement with those from the approach of solving the optical Bloch equation of density matrix operator.