We report on a new mechanism to control the spontaneous decay of quantum emitters by arranging them in a periodic array of subwavelength periodicity. The spontaneous emission of photons to radiative modes is an intrinsic property of any quantum emitter and represents a major source of decoherence in quantum photonic platforms. Here, we propose the realization of dark states within the radiation continuum that whose decoherence is suppressed. To do so we exploit the concept of bound states in the continuum (BICs) by designing a two-dimentional non-Bravais lattice of emitters. In contrast to previous proposals, the resulting dark photonic states are accesible from the far field. [Full article]
