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Edge states of photon pairs in cavity arrays with spatially modulated nonlinearity (1906.03541v1)
Published 8 Jun 2019 in physics.optics
Abstract: We study theoretically an extended Bose-Hubbard model with the spatially modulated interaction strength, describing a one-dimensional array of tunneling-coupled nonlinear cavities. It is demonstrated that the spatial modulation of the nonlinearity induces bound two-photon edge states. The formation of these edge states has been understood analytically in terms of nonlinear self-localization.
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