Two-dimensional chiral-waveguide quantum electrodynamics: Long-range qubit correlations and flat-band dark polaritons
Y. Marques, Ivan Andreevich Shelykh, Ivan V. Iorsh · Physical Review A · 2021
We consider a two-dimensional extension of the one-dimensional waveguide quantum electrodynamics and investigate the nature of linear excitations in two-dimensional arrays of qubits coupled to networks of chiral waveguides. We show that the combined effects of chirality and long-range photon-mediated qubit-qubit interactions lead to the emergence of the two-dimensional flat bands in the polaritonic spectrum, corresponding to slow strongly correlated light.