Intensity-based criterion for determining exceptional point in parity-time (PT) symmetric coupled array of optical waveguidesk

Keyword: Symmetry Breaking

Publisher: Nature.com

Published: Jul 3, 2026

Appendix A In this section, we present an analytical justification of the criterion \(I_r\) of Eq. (15) introduced in this paper. To this end, we first analyze the behavior of the propagation patter… [+2690 chars]

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