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InfoMat:A cross-field exploration of information technology and materials science

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InfoMat 2019年第1期1卷 4-5页

作者： Yanrong Li Qihua Xiong Yichun Liu Jianhua Hao roberto morandotti Carole Diederichs State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of ChinaChengduChina Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore Center for Advanced Optoelectronic Functional Materials Research Northeast Normal UniversityChangchunChina Department of Applied Physics Hong Kong Polytechnic UniversityHung HomHong Kong Institut National de la Recherche Scientifique Universitédu QuébecVarennesQuebecCanada Laboratoire Pierre Aigrain Ecole Normale SupérieurePSL Research UniversitySorbonne UniversitésParisFrance

As our modern society continuously embraces the captivating concepts of automation,artificial intelligence,virtual/augmented reality,and machine learning,information technology has extensively influenced all aspects of our personal,professional,and social *** technology will continue to transform the world for decades to ***,the innovation of information technology not only relies on the development of sophisticated algorithms and programming but also requires novel materials and high-performance devices to achieve interactions between humans and *** microprocessors and other key components shrinking down to nanoscale,electronic devices have fundamentally altered our communication and working patterns,ushering in a new era of the“Internet of Things.”However,current microelectronic technologies still need to overcome the physical limitations of traditional semiconductor materials to keep“Moore's law”*** from different fields have realized that developing novel and reliable materials is essential to improving computing capability and device portability and functionality while reducing energy *** unremitting efforts of cross-field research works have broadened the academic horizon and brought together materials scientists,chemists,applied and theoretical physicists,and electrical engineers,designing new material paradigms and state-of-the-art manufacturing methods or reviving present materials for brand-new applications for next-generation information technology.

关键词： overcome programming designing

Topologically tuned terahertz confinement in a nonlinear photonic chip

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Light(Science & Applications) 2022年第6期11卷 1296-1303页

作者： Jiayi Wang Shiqi Xia Ride Wang Ruobin Ma Yao Lu Xinzheng Zhang Daohong Song Qiang Wu roberto morandotti Jingjun Xu Zhigang Chen The MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjin 300457China Innovation Laboratory of Terahertz Biophysics National Innovation Institute of Defense Technology100071 BeijingChina Collaborative Innovation Center of Extreme Optics Shanxi University030006 TaiyuanShanxiChina INRS-EMT 1650 Blvd.Lionel-BouletVarennesQC J3X 152Canada

Compact terahertz(THz)functional devices are greatly sought after for high-speed wireless communication,biochemical sensing,and non-destructive ***,controlled THz generation,along with transport and detection,has remained a challenge especially for chip-scale devices due to low-coupling efficiency and unavoidable absorption ***,based on the topological protection of electromagnetic waves,we demonstrate nonlinear generation and topologically tuned confinement of THz waves in an engineered lithium niobate chip forming a wedge-shaped Su-Schrieffer-Heeger *** measured band structures provide direct visualization of the THz localization in the momentum space,while robustness of the confined mode against chiral perturbations is also analyzed and compared for both topologically trivial and nontrivial *** topological control of THz waves may bring about new possibilities in the realization of THz integrated circuits,promising for advanced photonic applications.

关键词： nonlinear realization wedge

Single‐pixel terahertz imaging:a review

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Opto-Electronic Advances 2020年第9期3卷 15-29页

作者： Luca Zanotto Riccardo Piccoli Junliang Dong roberto morandotti Luca Razzari Institut National de la Recherche Scientifique(INRS) CentreÉnergieMatériaux et Télécommunications(EMT)VarennesQC J3X 1S2Canada Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China

This paper is devoted to reviewing the results achieved so far in the application of the single-pixel imaging technique to terahertz(THz)*** use of THz radiation for imaging purposes has been largely explored in the last twenty years,due to the unique capabilities of this kind of radiation in interrogating material ***,THz imaging systems are still limited by the long acquisition time required to reconstruct the object image and significant efforts have been recently directed to overcome this *** of the most promising approaches in this sense is the so-called“single-pixel”imaging,which in general enables image reconstruction by patterning the beam probing the object and measuring the total transmission(or reflection)with a single-pixel detector(i.e.,with no spatial resolution).The main advantages of such technique are that i)no bulky moving parts are required to raster-scan the object and ii)compressed sensing(CS)algorithms,which allow an appropriate reconstruction of the image with an incomplete set of measurements,can be successfully ***,this can result in a reduction of the acquisition *** this review,we cover the experimental solutions proposed to implement such imaging technique at THz frequencies,as well as some practical uses for typical THz applications.

关键词： terahertz imaging single-pixel imaging compressed sensing

Free-space realization of tunable pin-like optical vortex beams

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Photonics Research 2021年第7期9卷 1204-1212页

作者： DOMENICO BONGIOVANNI DENGHUI LI MIHALIS GOUTSOULAS HAO WU YI HU DAOHONG SONG roberto morandotti NIKOLAOS KEFREMIDIS ZHIGANG CHEN MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Applied Physics Institute and School of PhysicsNankai UniversityTianjin 300457China INRS-EMT 1650 Blvd.Lionel-BouletVarennesQuebec J3X 1S2Canada Department of Applied Mathematics University of CreteHeraklionCrete 71409Greece Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Institute of Applied and Computational Mathematics FORTHHeraklionCrete 70013Greece Department of Physics&Astronomy San Francisco State UniversitySan FranciscoCalifornia 94132USA

We demonstrate,both analytically and experimentally,free-space pin-like optical vortex beams (POVBs). Such angular-momentum-carrying beams feature tunable peak intensity and undergo robust antidiffracting propagation,realized by judiciously modulating both the amplitude and the phase profile of a standard laser ***,they are generated by superimposing a radially symmetric power-law phase on a helical phase structure,which allows the inclusion of an orbital angular momentum term to the POVBs. During propagation in free space,these POVBs initially exhibit autofocusing dynamics,and subsequently their amplitude patterns morph into a high-order Bessel-like profile characterized by a hollow core and an annular main lobe with a constant or tunable width during propagation. In contrast with numerous previous endeavors on Bessel beams,our work represents the first demonstration of long-distance free-space generation of optical vortex "pins" with their peak intensity evolution controlled by the impressed amplitude structure. Both the Poynting vectors and the optical radiation forces associated with these beams are also numerically analyzed,revealing novel properties that may be useful for a wide range of applications.

关键词： tunable optical Bessel

A universal route to efficient non-linear response via Thomson scattering in linear solids

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National Science Review 2023年第7期10卷 203-212页

作者： Yongzheng Wen Flavio Giorgianni Igor Ilyakov Baogang Quan Sergey Kovalev Chen Wang Carlo Vicario Jan-Christoph Deinert Xiaoyu Xiong Joe Bailey Min Chen Alexey Ponomaryov Nilesh Awari Andrea Rovere Jingbo Sun roberto morandotti Luca Razzari Gabriel Aeppli Junjie Li Ji Zhou State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Paul Scherrer Institut Helmholtz-Zentrum Dresden-Rossendorf Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Institut de Physique école Polytechnique Fédérale de Lausanne (EPFL) Institut National de la Recherche Scientifique (INRS) Centreénergie Matériaux et Télécommunications (EMT) Department of Physics and Quantum Center ETH Zürich

Non-linear materials are cornerstones of modern optics and *** dependence on the intrinsic properties of particular materials,however,inhibits the at-will extension of demanding non-linear effects,especially those second-order ones,to widely adopted centrosymmetric materials(for example,silicon) and te chnologically important burgeoning spectral domains(for example,terahertz frequencies).Here we introduce a universal route to efficient non-linear responses enabled by exciting non-linear Thomson scattering,a fundamental process in electrodynamics that was known to occur only in relativistic electrons in metamaterial composed of linear *** a mechanism modulates the trajectory of charges,either intrinsically or extrinsically provided in solids,at twice the driving frequency,allowing second-harmonic generation at terahertz frequencies on crystalline silicon with extremely large non-linear susceptibility in our proof-of-concept *** offering a substantially material-and frequency-independent platform,our approach opens new possibilities in the fields of on-demand non-linear optics,terahertz sources,strong field light-solid interactions and integrated photonic circuits.

关键词： non-linear optical materials terahertz harmonic generation Thomson scattering magneto-electric coupling metamaterial

Nonlinear control of photonic higher-order topological bound states in the continuum

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Light(Science & Applications) 2021年第9期10卷 1726-1735页

作者： Zhichan Hu Domenico Bongiovanni Dario Jukić Ema Jajtić Shiqi Xia Daohong Song Jingjun Xu roberto morandotti Hrvoje Buljan Zhigang Chen The MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Applied Physics Institute and School of PhysicsNankai University300457TianjinChina INRS-EMT 1650 Boulevard Lionel-BouletVarennesQCJ3X 1S2Canada Faculty of Civil Engineering University of ZagrebA.Kačića Miošića 2610000ZagrebCroatia Department of Physics Faculty of ScienceUniversity of ZagrebBijenička c.3210000ZagrebCroatia Collaborative Innovation Center of Extreme Optics Shanxi University030006TaiyuanShanxiChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China610054ChengduSichuanChina Department of Physics and Astronomy San Francisco State UniversitySan FranciscoCA94132USA

Higher-order topological insulators(HOTIs)are recently discovered topological phases,possessing symmetry-protected corner states with fractional *** unexpected connection between these states and the seemingly unrelated phenomenon of bound states in the continuum(BICs)was recently *** nonlinearity is added to the HOTI system,a number of fundamentally important questions *** example,how does nonlinearity couple higher-order topological BICs with the rest of the system,including continuum states?In fact,thus far BICs in nonlinear HOTIs have remained *** we unveil the interplay of nonlinearity,higher-order topology,and BICs in a photonic *** observe topological corner states that are also BICs in a laser-written second-order topological lattice and further demonstrate their nonlinear coupling with edge(but not bulk)modes under the proper action of both self-focusing and defocusing ***,we calculate the eigenvalue spectrum and analog of the Zak phase in the nonlinear regime,illustrating that a topological BIC can be actively tuned by nonlinearity in such a photonic *** studies are applicable to other nonlinear HOTI systems,with promising applications in emerging topology-driven devices.

关键词： topological nonlinearity nonlinear

Integrated sources of photon quantum states based on nonlinear optics

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Light(Science & Applications) 2017年第1期6卷 370-381页

作者： Lucia Caspani Chunle Xiong Benjamin J Eggleton Daniele Bajoni Marco Liscidini Matteo Galli roberto morandotti David J Moss Institute of Photonics Department of PhysicsUniversity of StrathclydeGlasgow G11RDUK Institute of Photonics and Quantum Sciences Heriot-Watt UniversityEdinburgh EH144ASUK Centre for Ultrahigh bandwidth Devices for Optical Systems(CUDOS) Institute of Photonics and Optical Science(IPOS)School of PhysicsUniversity of SydneySydneyNSW 2006Australia Dipartimento di Ingegneria Industriale e dell’Informazione Universitàdi Paviavia Ferrata 127100PaviaItaly Dipartimento di Fisica Universitàdi Paviavia Bassi 627100 PaviaItaly INRS-EMT 1650 Boulevard Lionel-BouletVarennesQuébec J3X 1S2Canada Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China National Research University of Information Technologies Mechanics and OpticsSt.PetersburgRussia Center for Microphotonics Swinburne University of TechnologyHawthornVictoria3122 Australia

The ability to generate complex optical photon states involving entanglement between multiple optical modes is not only critical to advancing our understanding of quantum mechanics but will play a key role in generating many applications in quantum *** include quantum communications,computation,imaging,microscopy and many other novel technologies that are constantly being ***,approaches to generating parallel multiple,customisable bi-and multi-entangled quantum bits(qubits)on a chip are still in the early stages of ***,we review recent advances in the realisation of integrated sources of photonic quantum states,focusing on approaches based on nonlinear optics that are compatible with contemporary optical fibre telecommunications and quantum memory platforms as well as with chip-scale semiconductor *** new and exciting platforms hold the promise of compact,low-cost,scalable and practical implementations of sources for the generation and manipulation of complex quantum optical states on a chip,which will play a major role in bringing quantum technologies out of the laboratory and into the real world.

关键词： entanglement integrated optics nonlinear optics photon pairs quantum optics quantum states

Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source[Invited]

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Photonics Research 2018年第5期6卷 I0055-I0061页

作者： XINGYUAN Xu JIAYANG Wu THACH G.NGUYEN TANIA MOEIN SAI T.CHU BRENT E.LITTLE roberto morandotti ARNAN MITCHELL DAVID J.Moss Centre for Micro-Photonics Swinburne University of TechnologyHawthornVlC 3122Australia ARC Centre of Excellence for Ultrahigh-bandwidth Devices for Optical Systems(CUDOS) RMIT UniversityMelbourneVIC 3001Australia Department of Physics and Material Science City University of Hong KongTat Chee AvenueHong KongChina State Key Laboratory of Transient Optics and Photonics Xi'an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi'an 710119China INRS-Energie Materiaux et Telecommunications1650 Boulevard Lionel-BouletVarennesQuebec J3X 1S2Canada National Research University of Information Technologies Mechanics and OpticsSt.PetersburgRussia Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China

We demonstrate significantly improved performance of a microwave true time delay line based on an integrated optical frequency comb source. The broadband micro-comb(over 100 nm wide) features a record low free spectral range(FSR) of 49 GHz, resulting in an unprecedented record high channel number(81 over the C band)—the highest number of channels for an integrated comb source used for microwave signal processing. We theoretically analyze the performance of a phased array antenna and show that this large channel count results in a high angular resolution and wide beam-steering tunable range. This demonstrates the feasibility of our approach as a competitive solution toward implementing integrated photonic true time delays in radar and communications systems.

关键词： Photonic microwave true time delays for phased array antennas a 49 GHz FSR integrated optical micro-comb source

Orthogonally polarized RF optical single sideband generation with integrated ring resonators

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Journal of Semiconductors 2021年第4期42卷 53-66页

作者： Mengxi Tan Xingyuan Xu Jiayang Wu Thach G.Nguyen Sai T.Chu Brent E.Little Arnan Mitchell roberto morandotti David J.Moss Optical Sciences Centre Swinburne University of TechnologyHawthornVIC 3122Australia Electro-Photonics Laboratory Department of Electrical and Computer Systems EngineeringMonash UniversityVIC3800Australia School of Engineering RMIT UniversityMelbourneVIC 3001Australia Department of Physics City University of Hong KongHong KongChina State Key Laboratory of Transient Optics and Photonics Xi'an Institute of Optics and Precision MechanicsChinese Academy of ScienceXi'an 710119China INRS-Énergie Matériaux et Télécommunications1650 Boulevard Lionel-BouletVarennesQuébecJ3X 1S2Canada Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China

We review recent work on narrowband orthogonally polarized optical RF single sideband generators as well as dualchannel equalization,both based on high-Q integrated ring *** devices operate in the optical telecommunications C-band and enable RF operation over a range of either fixed or thermally tuneable *** operate via TE/TM mode birefringence in the *** achieve a very large dynamic tuning range of over 55 dB for both the optical carrier-to-sideband ratio and the dual-channel RF equalization for both the fixed and tunable devices.

关键词： microwave photonics micro-ring resonators radio frequency