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Bound states in the continuum emerge when a regular array of quantum emitters is coupled with a single transverse mode of the electromagnetic field propagating in a waveguide. We characterize these bound states for an arbitrary number of emitters. In particular, we show that, due to the presence of evanescent fields, the excitation profile of the emitter states is a sinusoidal wave. We also discuss the emergence of multimers, consisting in subsets of emitters that share one excitation, separated by two lattice spacings in which the electromagnetic field is approximately vanishing.
We characterize the coherent dynamics of a two-level quantum emitter driven by a pair of symmetrically-detuned phase-locked pulses. The promise of dichromatic excitation is to spectrally isolate the excitation laser from the quantum emission, enablin
We introduce spatial deformations to an array of light sources and study how the estimation precision of the interspacing distance, d, changes with the sources of light used. The quantum Fisher information (QFI) is used as the figure of merit in this
We investigate two-dimensional atomic arrays as a platform to modify the electromagnetic environment of individual quantum emitters. Specifically, we demonstrate that control over emission linewidths, resonant frequency shifts, and local enhancement
A ring of sub-wavelength spaced dipole-coupled quantum emitters possesses only few radiant but many extraordinarily subradiant collective modes. These exhibit a 3D-confined spatial radiation field pattern forming a nano-scale high-Q optical resonator
Considerable efforts have been recently devoted to combining ultracold atoms and nanophotonic devices to obtain not only better scalability and figures of merit than in free-space implementations, but also new paradigms for atom-photon interactions.