  In this article we use the method of shortcuts to adiabaticity to design a
photonic lattice (array of waveguides) which can drive the input light to a
controlled location at the output. The output position in the array is
determined by functions of the propagation distance along the waveguides, which
modulate the lattice characteristics (index of refraction, first and second
neighbor couplings). The proposed coupler is expected to posses the robustness
properties of the design method, coming from its adiabatic nature, and also to
have a smaller footprint than purely adiabatic couplers. The present work
provides a very interesting example where methods from quantum control can be
exploited to design lattices with desired input-output properties.
