Broadband continuous supersymmetric transformation:a new paradigm for transformation optics  

作　　者：Jieun Yim Nitish Chandra Xilin Feng Zihe Gao Shuang Wu Tianwei Wu Haoqi Zhao Natalia M.Litchinitser Liang Feng 

机构地区：[1]Department of Materials Science and Engineering,University of Pennsylvania,Philadelphia,PA 19104,USA [2]Department of Electrical and Computer Engineering,Duke University,Durham,NC 27708,USA [3]Department of Electrical and Systems Engineering,University of Pennsylvania,Philadelphia,PA 19104,USA.

出　　处：《eLight》2022年第1期203-212,共10页e光学（英文）

基　　金：U.S.Army Research Office(ARO)(W911NF-19-1-0249 and W911NF-18-1-0348);National Science Foundation(NSF)(CMMI-2037097).

摘　　要：Transformation optics has formulated a versatile framework to mold the flow of light and tailor its spatial characteristics at will.Despite its huge success in bringing scientific fiction(such as invisibility cloaking)into reality,the coordinate transformation often yields extreme material parameters unfeasible even with metamaterials.Here,we demonstrate a new transformation paradigm based upon the invariance of the eigenspectra of the Hamiltonian of a physical system,enabled by supersymmetry.By creating a gradient-index metamaterial to control the local index variation in a family of isospectral optical potentials,we demonstrate broadband continuous supersymmetric transformation in optics,on a silicon chip,to simultaneously transform the transverse spatial characteristics of multiple optical states for arbitrary steering and switching of light flows.Through a novel synergy of symmetry physics and metamaterials,our work provides an adaptable strategy to conveniently tame the flow of light with full exploitation of its spatial degree of freedom.

关 键 词：SUPERSYMMETRY Transformation optics METAMATERIALS Integrated photonics 

分 类 号：O17[理学—数学]