The initial second-order correlation,(on a logarithmic scale), calculated with a weak incident coherent state as a function of the frequency ω near the qubit resonant frequency () for different numbers of qubits. The first (second) row is for (); the first (second) column is for transmitted (reflected) photons. The black, dashed line indicates the classical value (i.e., ). For reflected photons with , for all ω and hence is not plotted. Note that as for the single-photon transmission in Fig. 2, is symmetric about for but asymmetric in the case. For a wide range of parameters, both transmitted and reflected photons are bunched.