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

Mark Lyubarov, Alexander Poddubny

Research output: Contribution to journalArticlepeer-review

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
StatePublished - 15 Dec 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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