We show that photon coincidence spectroscopy can provide an unambiguous signature of two atoms simultaneously interacting with a quantised cavity field mode. We also show that the single-atom Jaynes-Cummings model can be probed effectively via photon coincidence spectroscopy, even with deleterious contributions to the signal from two-atom events. In addition, we have explicitly solved the eigenvectors and eigenvalues of two two-level atoms coupled to a quantised cavity mode for differing coupling strengths.
@article{arxiv.quant-ph/0104005,
title = {Photon coincidence spectroscopy for two-atom cavity quantum electrodynamics},
author = {L. Horvath and B. C. Sanders},
journal= {arXiv preprint arXiv:quant-ph/0104005},
year = {2007}
}