Generalized electronics for compact atomic clocks

We present the electronics we developed in the frame of IND55 EMRP project with the goal to support next generation sub-10^-13/√(τ) compact atomic clocks. In this regard, particular attention has been devoted to reduce the Dick/intermodulation effect in the low 10^-14, very close to the shot-noise limit. The scheme can adapt to Cs and Rb clocks with minimal modifications. The digital implementation guarantees a high degree of flexibility that allows to run very different clock typologies and to implement innovative schemes such as the frequency lock of the laser to the internal cell.