means an expected single photon emission rate of $10-100$ kHz. In terms of SPS efficiency, the possibility to enhance even further the single-photon emission rate (possibly beyond the MHz) is an unequivocal advantage of the present source as compared to typical heralded ones [@Fasel2004; @kartik2012]. A still open question, in view of actual applications of this scheme as a SPS, concerns the feasibility of pulsed operation, which would be required for single-photon emission on-demand. The delay-dependence of $g^{(2)}(\tau)$ is determined by beatings between the two oscillators. It shows pronounced oscillations at a rate determined by the tunnel coupling, and the condition $g^{(2)}(\tau)<1$ is fulfilled only over a delay on the order of $\tau\simeq \hbar/J$ [@savona10prl; @bamba], i.e. much shorter than the photon lifetime. This feature prevents the observation of photon antibunching in the pulsed excitation regime. However, it should be possible to address this issue by further processing the output of the two-cavity system. On one hand, a post-selective temporal filter with a $\hbar/J$ delay window can be applied at the output of the coupled cavity device to ensure the presence of single-photon Fock states. Moreover, it was already shown that photon antibunching can be optimized in similar situations through 