Fig. 1: Conceptual illustration of a lattice of polariton dyads with optically controlled connections.

a A diagram depicting the possible experimental implementation of a lattice of pairwise coupled polariton condensates with optically controlled connections. Red cones symbolize input signal beams, and red arrows indicate the connections influenced by these beams. The dyads are numbered with Roman numerals to correspond with the numbering in Fig. 2c. b A streamlined illustration of the envisaged structure, with gray, red, and blue circles denoting condensate lattice nodes, input, and output optical signals, respectively. Empty (filled) circles correspond to the absence (presence) of the signals. c–e Illustration of polariton dyad excitation in a planar microcavity, showing (c) profiles of two nonresonant optical pump spots for dyad excitation, (d, e) the condensates in the dyad with even (OFF) and odd (ON) number of interference fringes. f–l Depiction of the excitation of two adjacent dyads in OFF (f, h, k) and ON (g, j, l) states. Each pair of panels shows polariton density distribution (left) and pump intensity profiles, including the potential barrier (right). Switching between OFF and ON states is achieved using a signal optical pump beam equidistant from the four nodes. f, g illustrate no separation between the dyads, h, j and k, l show the dyads separated by real (orange rectangle) and imaginary (green rectangle) potential barriers, respectively