Spatiospectral separation of exceptional points in PT-symmetric optical potentials

Sunkyu Yu, Xianji Piao, Daniel R. Mason, Sungjun In, Namkyoo Park

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24 Scopus citations


Non-Hermitian Hamiltonians satisfying parity-time (PT) symmetry reveal unusual physical phenomena related to exceptional points, where the onset of PT symmetry breaking occurs. Here, by permitting dispersive variations in the PT-symmetric potential along the propagation axis of a wave, we show that it is possible to obtain PT-induced exceptional points of spatiospectral separation. As an example, we demonstrate "rainbow nonreciprocity" using a PT-symmetric chirped optical potential.

Original languageEnglish
Article number031802
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
StatePublished - 11 Sep 2012


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