Year: 2018
Type: article
Abstract: We introduce the notion of a supercharge optical array synthesized according to supersymmetric charge operators. Starting from an arbitrary array, mathematical supersymmetry transformation can be used systematically to create a zero-energy physical state below the ground state of the super-partner array. This zero mode, which is pinned deep in the mid-gap of the corresponding supercharge array owing to the square-root spectral relationship between a supercharge and a super-Hamiltonian array, is shown to be protected because of the chiral symmetry inherent to a supercharge array. A supercharge array can be used in practical applications to design a discrete optical system of waveguides or coupled resonators where the mid-gap zero mode facilitates robust light dynamics in either spatial or time domain.
Source: Optics Letters
DOI: 10.1364/ol.43.004927
Authors: Bikashkali Midya, Wiktor Walasik, Natalia M. Litchinitser, Liang Feng
Institutions: University of Pennsylvania, Duke University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Army Research Office
Award: G7925096422
OpenAlex ID: W2890163801