Strong coupling of single cesium atoms with a high-finesse optical micro-cavity (the finesse of our Fabry-Perot-type
micro-cavity is F = 3.3 x 105 and the cavity length is lc = 86 μm) has been realized for the both cases of TEM00 and
TEM10 cavity modes in our experiments. The typical parameters are (g00, κ, Υ) = 2π x (23.9, 2.6, 2.6) MHz and (g10, κ, Υ)
= 2π x (20.5, 2.6, 2.6) MHz for these two cases, respectively. Obviously our system reaches the strong coupling regime.
The first application is to adopt strong coupling of free-fall individual atoms with the TEM00 cavity mode for
determining the effective temperature of laser-cooled atoms prepared in a magneto-optical trap located just above the
micro-cavity. The second application is to employ strong coupling of free-fall individual atoms with the tilted TEM10
cavity mode, in stead of TEM00 mode, for more precisely tracking the trajectories of atoms passing through the cavity
Single photon counting module (SPCM) has been widely used in quantum information processing (QIP) to investigate the novel quantum-mechanical phenomena. We analysis the effect of SPCMs on photon statistics of light fields by mean of Hanbury Brown and Twiss (HBT) configuration. It shows that the measured second-order degree of coherence g(2) and Mandel Q factor for different states are strongly corrected. The total efficiency and background are taken into account. The agreement between experiment based on the coherent as well as thermal fields and the theory is quite good.