Edge states of photon pairs in cavity arrays with spatially modulated nonlinearity
arXiv:1906.03541 · doi:10.1103/PhysRevA.100.053813
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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- Interaction-Induced Higher-Order Topological Insulator via Floquet Engineering
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