Quantum Physics with integrated waveguide arrays

Within the last few years, lattices of evanescently coupled optical waveguides have proven to be a versatile platform for investigating a variety of quantum effects. The possibility of engineering various interactions by design makes these arrays an experimentally accessible tool for studying a variety of effects from a large number of fields of physics. Another salient feature of this system is the possibility of controlling the exact initial conditions for the light propagating inside the array. Moreover, the decoherence rate in this system is very low, even for longer propagation distances. In this talk, we present a summary of some of our studies on optical waveguide arrays.