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

Mark Lyubarov*, Alexander Poddubny

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    We theoretically study the dissipative Bose–Hubbard model describing the array of tunneling-coupled cavities with non-conservative photon–photon interaction. The bound two-photon states are formed in this system either in the limited range of the center-of-mass wave vectors or in the full Brillouin zone, depending on the strength of the dissipative interaction. Transition between these two regimes is manifested as an exceptional point in the complex energy spectrum. This improves fundamental understanding of the interplay of non-Hermiticity and interactions in the quantum structures and can potentially be used for on-demand nonlinear light generation in photonic lattices.

    Original languageEnglish
    Pages (from-to)5917-5920
    Number of pages4
    JournalOptics Letters
    Volume43
    Issue number24
    DOIs
    Publication statusPublished - 15 Dec 2018

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