Perturbative countersurveillance metaoptics with compound nanosieves

查看全文 作　　者：Jiancai [1]Xue;Zhang-Kai [1]Zhou;Limin [1]Lin;Chao [1]Guo;Shang [2]Sun;Dangyuan [3]Lei;Cheng-Wei [2]Qiu;Xue-Hua [1]Wang

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics,Sun Yat-sen University,510275 Guangzhou,China;[2]Department of Electrical and Computer Engineering,National University of Singapore,4 Engineering Drive 3,Singapore 117583,Singapore;[3]Department of Materials Science and Engineering,City University of Hong Kong,83 Tat Chee Avenue,Kowloon,Hong Kong

出　　处：《Light(Science & Applications)》索引2019年第8卷第1期,共10页

基　　金：supported in part by the National Key R&D Program of China(2016YFA0301300);the Key R&D Program of Guangdong Province(Grant No.2018B030329001);the National Natural Science Foundation of China(61675237,11761141015,91750207);the Guangdong Natural Science Funds for Distinguished Young Scholars(2017B030306007);the Guangdong Special Support Program(2017TQ04C487);the Guangdong Natural Science Foundation(2016A030312012);the Pearl River S&T Nova Program of Guangzhou(201806010033);the Guangzhou Science and Technology Project(201805010004);the National Research Foundation Singapore;the National Natural Science Foundation of China(NSFC)Joint Grant NRF2017NRFNSFC002-015;partially supported by the National Research Foundation,Prime Minister’s Office,Singapore,under its Competitive Research Programme(CRP award no.NRF-CRP15-2015-03). 摘　　要：The progress of metaoptics relies on identifying photonic materials and geometries,the combination of which represents a promising approach to complex and desired optical functionalities.Material candidate options are primarily limited by natural availability.Thus,the search for meta-atom geometries,by either forward or inverse means,plays a pivotal role in achieving more sophisticated phenomena.Past efforts mainly focused on building the geometric library of individual meta-atoms and synthesizing various ones into a design.However,those efforts neglected the powerfulness of perturbative metaoptics due to the perception that perturbations are usually regarded as adverse and in need of being suppressed.Here,we report a perturbation-induced countersurveillance strategy using compound nanosieves mediated by structural and thermal perturbations.Private information can be almost perfectly concealed and camouflaged by the induced thermal-spectral drifts,enabling information storage and exchange in a covert way.This perturbative metaoptics can self-indicate whether the hidden information has been attacked during delivery.Our results establish a perturbative paradigm of securing a safer world of information and internet of things. 关键词：OPTICS SIEVE COMPOUND

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Perturbative countersurveillance metaoptics with compound nanosieves

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