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Introduction to non-hermitian photonics in complex media:PT-symmetry and beyond

photonics Research 2018年第5期6卷 I0001-I0003页

作者： GREG GBUR KONSTANTINOS MAKRIS University of North Carolina at Charlotte Department of Physics and Optical ScienceCharlotteNorth Carolina 28223USA University of Crete Physics Department71003 HeraklionGreece

This special issue is dedicated to the emerging field of non-hermitian photonics of complex media, with emphasis on PT-symmetric optical structures. In particular, the papers highlight the variety of applications bein... 详细信息

关键词： non-hermitian photonics complex media PT-symmetry and beyond

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On-chip single-photon chirality encircling exceptional points

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Chip 2023年第4期2卷 71-77页

作者： Zhen-Nan Tian Feng Yu Xu-Lin Zhang Kai Ming Lau Li-Cheng Wang Jensen Li C.T.Chan Qi-Dai Chen State Key Laboratory of Integrated Optoelectronics College of Electronic Sci-ence and EngineeringJilin UniversityChangchun 130012China Department of Physics The Hong Kong University of Science and TechnologyClear Water BayHong Kong 999077China

Exceptional points(EPs),which are typically defined as the degener-acy points of a non-hermitian Hamiltonian,have been investigated in various physical systems such as photonic *** particular,the intriguing topological structures around EPs have given rise to novel strategies for manipulating photons and the underlying mechanism is especially useful for on-chip photonic *** some on-chip experiments with the adoption of lasers have been reported,EP-based photonic chips working in the quantum regime largely re-main *** the current work,a single-photon experiment was proposed to dynamically encircle an EP in on-chip photonic waveg-uides possessing passive anti-parity-time *** coinci-dences measurement reveals a chiral feature of transporting single photons,which can act as a building block for on-chip quantum de-vices that require asymmetric *** findings in the cur-rent work pave the way for on-chip experimental study on the physics of EPs as well as inspiring applications for on-chip non-hermitian quantum devices.

关键词： non-hermitian photonics Photonic chip Exceptional points Single photons

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Highlighting photonics: looking into the next decade

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eLight 2021年第1期1卷 2-13页

作者： Zhigang Chen Mordechai Segev The MOE Key Laboratory of Weak-Light nonlinear photonics TEDA Applied Physics Institute and School of PhysicsNankai UniversityTianjin 300457China Department of Physics and Astronomy San Francisco State UniversitySan FranciscoCA 94132USA Physics Department Electrical Engineering Departmentand Solid State InstituteTechnionHaifaIsrael.

Let there be light-to change the world we want to be!Over the past several decades,and ever since the birth of the first laser,mankind has witnessed the development of the science of light,as light-based technologies have revolutionarily changed our *** to say,photonics has now penetrated into many aspects of science and technology,turning into an important and dynamically changing field of increasing interdisciplinary *** this inaugural issue of eLight,we highlight a few emerging trends in photonics that we think are likely to have major impact at least in the upcoming decade,spanning from integrated quantum photonics and quantum computing,through topological/non-hermitian photonics and topological insulator lasers,to AI-empowered nanophotonics and photonic machine *** Perspective is by no means an attempt to summarize all the latest advances in photonics,yet we wish our subjective vision could fuel inspiration and foster excitement in scientific research especially for young researchers who love the science of light.

关键词： Integrated quantum photonics Photonic quantum computing Topological photonics non-hermitian photonics Topological insulator lasers AI-empowered nanophotonics Photonic machine learning

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Observation of topological rainbow in non-hermitian systems

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Chinese Optics Letters 2023年第12期21卷 97-102页

作者：路翠翠赵闻张胜郑焱基王晨阳李耀华刘永椿胡小永杭志宏 Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic SystemsSchool of PhysicsBeijing Institute of TechnologyBeijing 100081China School of Physical Science and Technology Provincial Key Laboratory for Thin Films and Institute for Advanced StudySoochow UniversitySuzhou 215006China State Key Laboratory of Low-Dimensional Quantum Physics Department of PhysicsFrontier Science Center for Quantum InformationTsinghua UniversityBeijing 100084China State Key Laboratory for Mesoscopic Physics&Department of Physics Collaborative Innovation Center of Quantum Matter&Frontiers Science Center for Nano-optoelectronicsBeijing Academy of Quantum Information SciencesPeking UniversityBeijing 100871China

Topological photonic states have promising applications in slow light,photon sorting,and optical ***,realizing such states in non-hermitian systems has been challenging due to their complexity and elusive *** this work,we have experimentally realized a topological rainbow in non-hermitian photonic crystals by controlling loss in the microwave frequency range for what we believe is the first *** reveal that the lossy photonic crystal provides a reliable platform for the study of non-hermitian photonics,and loss is also taken as a degree of freedom to modulate topological states,both theoretically and *** work opens a way for the construction of a nonhermitian photonic crystal platform,will greatly promote the development of topological photonic devices,and will lay a foundation for the real-world applications.

关键词： topological rainbow non-hermitian photonics photonic crystal slow-light effect

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