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Information Published In Copyright Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Submission history Received: 28 January 2022 Accepted: 27 May 2022 Permissions Request permissions for this article. Acknowledgments Funding: The initial stages of this research were funded by a grant from the US Air Force Office of Scientific Research.
Exceptional points for photon pairs bound by nonlinear dissipation in cavity arrays
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.
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