Decoherence in localized photon emission

The spatiotemporal dynamics of photon emission into a non-local farfield channel and two local nearfield channels from a pair of coupled two level systems is analysed using a model for emission based on Wigner-Weisskopf theory. The local quantum beats can be observed in the two nearfield channels. However, the presence of the farfield causes decoherence in the quantum beats even if only photon emissions into the near field channels are considered.