leaving the specific characterization of the device output in terms of single-photon wave packets for future reports. With this, we also expect this proposal to stimulate new research efforts in silicon quantum photonics and CMOS-compatible quantum information technology.]{}

The paper is organized as follows. In section \[sec:model\] we present the basic model, based on a master equation for the system hamiltonian and dissipative terms including the effects of losses and dephasing. In section \[sec:results\], we give an overview of the steady state results, quantifying the optimized antibunching as a function of the system parameters, and test its robustness with respect to pure dephasing mechanisms. Finally, we draw the conclusions of this work in section \[sec:conclu\].

Model of driven/dissipative coupled nonlinear resonators {#sec:model}
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![Scheme of two coupled resonators made of a Kerr-type nonlinear material. We highlight that just one of the cavities is resonantly driven by a coherent light source, and output light is collected from the same according to the scheme proposed in [@savona10prl].[]{data-label="sistema"}](figure1.pdf){width="50.00000%"}

The formalism introduced in the previous work for a single resonator [@ferretti2012] can be straightforwardly generalized to the case of two tunnel-coupled coupled resonators made of a Kerr-type nonlinear material, or *photonic molecule*, schematically represented 