Fig. 3: Elementary QPIC with single hopping region.
a Sketch of a polariton circuit made of a pair of co-propagating waveguides, labeled as A and B, which are coupled along a spatial region of length l. b Schematic behavior of the coupling constant, J(x), describing the evanescent coupling between the two waveguides of the polariton circuit described in a. In this setup, the coupling is non-zero and equal to a constant value J only in the region x1 < x < x2.
