Exceptional points for photon pairs bound by nonlinear dissipation in cavity arrays

Abstract

We study theoretically the dissipative Bose-Hubbard model describing array of tunneling-coupled cavities with non-conservative photon-photon interaction. Our calculation of the complex energy spectrum for the photon pairs reveals exceptional points where the two-photon states bound by nonlinear dissipation are formed. This improves fundamental understanding of the interplay of non-Hermiticity and interactions in the quantum structures and can be potentially used for on-demand nonlinear light generation in photonic lattices.

arXiv comment4 pages, 4 figures

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Cited by in corpus (5)

• Fermion doubling theorems in 2D non-Hermitian systems for Fermi points and exceptional points
• Radiative topological biphoton states in modulated qubit arrays
• Interaction-induced topological states of photon pairs
• Doublons, topology and interactions in a one-dimensional lattice
• Edge states of photon pairs in cavity arrays with spatially modulated nonlinearity