O. Yesilyurt, Z. Kudyshev, A. Boltasseva, V. Shalaev, A. Kildishev
The realization of integrated quantum photonic circuits is crucial for scalable quantum computing and information processing applications. One of the milestones is the realization of highly-efficient coupling of pre-determined single-photon sources into the on-chip environment. Along with solid-state quantum sources, like quantum dots and defects in solids, quantum defects in 2D materials have attracted significant interest due to their quantum emission properties and stability. We have developed an adjoint-topology optimization framework to improve the coupling efficiency of color centers in hBN to the silicon nitride platform. We have demonstrated more than 75% coupling efficiency with a topology optimized coupler.
{"title":"Topology optimization of high-efficiency on-chip single photon sources","authors":"O. Yesilyurt, Z. Kudyshev, A. Boltasseva, V. Shalaev, A. Kildishev","doi":"10.1117/12.2594041","DOIUrl":"https://doi.org/10.1117/12.2594041","url":null,"abstract":"The realization of integrated quantum photonic circuits is crucial for scalable quantum computing and information processing applications. One of the milestones is the realization of highly-efficient coupling of pre-determined single-photon sources into the on-chip environment. Along with solid-state quantum sources, like quantum dots and defects in solids, quantum defects in 2D materials have attracted significant interest due to their quantum emission properties and stability. We have developed an adjoint-topology optimization framework to improve the coupling efficiency of color centers in hBN to the silicon nitride platform. We have demonstrated more than 75% coupling efficiency with a topology optimized coupler.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130318290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Great efforts have been made to explore the Fano resonances in two-dimensional transition metal dichalcogenides (TMDs) coupled with plasmonic nanostructures in the visible region. However, the intrinsic losses of metallic materials and the TMD exciton linewidths of at least tens of meV at room temperature (RT) inevitably limit the achievable Q factor of the Fano resonance. Herein, we integrate a monolayer WS2 with single hydrogenated amorphous silicon nanospheres (SiNSs) in water. Pronounced asymmetric Fano resonances with a Q factor up to 104 at the A exciton frequency (2.0 eV) are observed at RT. Fano fitting and modified coupled-mode theory both suggest a decreased A exciton linewidth of ~10 meV as compared to the reported value (~60 meV). This is attributed to the enhanced decay of trion in WS2. Moreover, directional Fano coupling can be achieved by exciting the hybrid from the SiNS or WS2 side, providing more possibilities in device implementation.
{"title":"High-quality-factor Fano resonances in monolayer WS2 coupled with a single dielectric nanosphere at room temperature","authors":"Jie Fang, Kan Yao, Yuebing Zheng","doi":"10.1117/12.2593674","DOIUrl":"https://doi.org/10.1117/12.2593674","url":null,"abstract":"Great efforts have been made to explore the Fano resonances in two-dimensional transition metal dichalcogenides (TMDs) coupled with plasmonic nanostructures in the visible region. However, the intrinsic losses of metallic materials and the TMD exciton linewidths of at least tens of meV at room temperature (RT) inevitably limit the achievable Q factor of the Fano resonance. Herein, we integrate a monolayer WS2 with single hydrogenated amorphous silicon nanospheres (SiNSs) in water. Pronounced asymmetric Fano resonances with a Q factor up to 104 at the A exciton frequency (2.0 eV) are observed at RT. Fano fitting and modified coupled-mode theory both suggest a decreased A exciton linewidth of ~10 meV as compared to the reported value (~60 meV). This is attributed to the enhanced decay of trion in WS2. Moreover, directional Fano coupling can be achieved by exciting the hybrid from the SiNS or WS2 side, providing more possibilities in device implementation.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124585838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Podolskiy, E. Simmons, Kun Li, A. Briggs, L. Nordin, Jiaming Xu, D. Wasserman
We present phonic funnels, a novel material platform, that enables a smooth optical link between the diffraction-limited and deep subwavelength areas. Photonic funnels comprise conical structures with hyperbolic cores that enable highly confined propagation of light and perfectly conducting walls that isolate the core of the funnel from the surroundings. We demonstrate realization of the funnels with semiconductor metamaterial platform, with minimum diameter of the opening of the order of 1/30-th of free space wavelength and characterize propagation of light through the funnels experimentally and theoretically. We also analyze funnel-induced modulation of emission.
{"title":"Photonic funnels for sub-diffraction propagation and confinement of light","authors":"V. Podolskiy, E. Simmons, Kun Li, A. Briggs, L. Nordin, Jiaming Xu, D. Wasserman","doi":"10.1117/12.2594173","DOIUrl":"https://doi.org/10.1117/12.2594173","url":null,"abstract":"We present phonic funnels, a novel material platform, that enables a smooth optical link between the diffraction-limited and deep subwavelength areas. Photonic funnels comprise conical structures with hyperbolic cores that enable highly confined propagation of light and perfectly conducting walls that isolate the core of the funnel from the surroundings. We demonstrate realization of the funnels with semiconductor metamaterial platform, with minimum diameter of the opening of the order of 1/30-th of free space wavelength and characterize propagation of light through the funnels experimentally and theoretically. We also analyze funnel-induced modulation of emission.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114798366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Barraza, E. A. Chan, Sergei Kurdumov, Tongjun Liu, K. Macdonald, J. Ou, N. Papasimakis, T. Pu, G. Yuan, N. Zheludev
We reports on recent advances in applications of deep learning and topologically structured light to far-field non-destructive imaging with deep subwalength resolution and picometric metrology
{"title":"Picophotonics: visible invisible","authors":"C. Barraza, E. A. Chan, Sergei Kurdumov, Tongjun Liu, K. Macdonald, J. Ou, N. Papasimakis, T. Pu, G. Yuan, N. Zheludev","doi":"10.1117/12.2595070","DOIUrl":"https://doi.org/10.1117/12.2595070","url":null,"abstract":"We reports on recent advances in applications of deep learning and topologically structured light to far-field non-destructive imaging with deep subwalength resolution and picometric metrology","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116902003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We present an alternative approach to dielectric meta-surfaces and demonstrate its scalability, mechanical durability and laser damage resilience. The process is based on laser raster-scan of a thin metal film on a glass, followed by dry-etching and removal of the metal nano-particles mask. We will present new approaches developed to “boost” the attainable optical response based on new underlying physics of the laser printed Au nanoparticle mask.
{"title":"Demonstration of large aperture tailorable meta-surfaces with superior mechanical and laser power durability","authors":"E. Feigenbaum, N. Ray, J. Yoo, Hoang T. Nguyen","doi":"10.1117/12.2593736","DOIUrl":"https://doi.org/10.1117/12.2593736","url":null,"abstract":"We present an alternative approach to dielectric meta-surfaces and demonstrate its scalability, mechanical durability and laser damage resilience. The process is based on laser raster-scan of a thin metal film on a glass, followed by dry-etching and removal of the metal nano-particles mask. We will present new approaches developed to “boost” the attainable optical response based on new underlying physics of the laser printed Au nanoparticle mask.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115048571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Time dependent systems do not in general conserve energy invalidating much of the theory developed for static systems and turning our intuition on its head. This is particularly acute in luminal space time crystals where the structure moves at or close to the velocity of light. Conventional Bloch wave theory no longer applies, energy grows exponentially with time, and a new perspective is required to understand the phenomenology. In this letter we identify a new mechanism for amplification: the compression of lines of force that are nevertheless conserved in number.
{"title":"A new mechanism for gain in time dependent media","authors":"J. Pendry, E. Galiffi, P. Huidobro","doi":"10.1117/12.2593822","DOIUrl":"https://doi.org/10.1117/12.2593822","url":null,"abstract":"Time dependent systems do not in general conserve energy invalidating much of the theory developed for static systems and turning our intuition on its head. This is particularly acute in luminal space time crystals where the structure moves at or close to the velocity of light. Conventional Bloch wave theory no longer applies, energy grows exponentially with time, and a new perspective is required to understand the phenomenology. In this letter we identify a new mechanism for amplification: the compression of lines of force that are nevertheless conserved in number.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126482217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Macdonald, Jinxiang Li, Tongjun Liu, J. Ou, Domitrios Papas, E. Plum, N. Zheludev
We review recent advances in the physics and technology of plasmonic and dielectric nanomechanical metamaterials, wherein optical and mechanical resonances can be coupled to provide a plethora of dynamic photonic functionalities. External electric, magnetic, thermal, acoustic and optical stimuli drive pico/nanometric displacements of the metamaterial building blocks, modulating optical properties at MHz frequencies.
{"title":"Metamaterial nanomachines driven by heat, sound, electric and magnetic fields, and light","authors":"K. Macdonald, Jinxiang Li, Tongjun Liu, J. Ou, Domitrios Papas, E. Plum, N. Zheludev","doi":"10.1117/12.2594665","DOIUrl":"https://doi.org/10.1117/12.2594665","url":null,"abstract":"We review recent advances in the physics and technology of plasmonic and dielectric nanomechanical metamaterials, wherein optical and mechanical resonances can be coupled to provide a plethora of dynamic photonic functionalities. External electric, magnetic, thermal, acoustic and optical stimuli drive pico/nanometric displacements of the metamaterial building blocks, modulating optical properties at MHz frequencies.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124676592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Efficient light manipulation at subwavelength scales in the mid-infrared (MIR) region is essential for various applications and can be harnessed from intrinsic low-loss dielectric resonators. Here, we demonstrate the fabrication of truncated spherical selenium (Se) resonators with tunable high-quality (Q) factor Mie resonances. Large area amorphous Se subwavelength resonators of varying sizes were grown on different substrates, using a novel CVD process. We demonstrate size-tunable Mie resonances spanning the 2-16 µm range, for single isolated resonators and large area ensembles, respectively. We show strong tunable absorption resonances (90%) in ensembles of resonators in a significantly broad MIR range. Moreover, by coupling resonators to epsilon-near-zero (ENZ) substrates, we engineer high-Q resonances as high as Q=40. These findings open up new possibilities in meta-atom paints, anti-reflective coatings, detection technology, and large area metasurface fabrications.
{"title":"Subwavelength mie-resonant selenium resonators for mid-infrared meta-optics","authors":"Danveer Singh","doi":"10.1117/12.2597756","DOIUrl":"https://doi.org/10.1117/12.2597756","url":null,"abstract":"Efficient light manipulation at subwavelength scales in the mid-infrared (MIR) region is essential for various applications and can be harnessed from intrinsic low-loss dielectric resonators. Here, we demonstrate the fabrication of truncated spherical selenium (Se) resonators with tunable high-quality (Q) factor Mie resonances. Large area amorphous Se subwavelength resonators of varying sizes were grown on different substrates, using a novel CVD process. We demonstrate size-tunable Mie resonances spanning the 2-16 µm range, for single isolated resonators and large area ensembles, respectively. We show strong tunable absorption resonances (90%) in ensembles of resonators in a significantly broad MIR range. Moreover, by coupling resonators to epsilon-near-zero (ENZ) substrates, we engineer high-Q resonances as high as Q=40. These findings open up new possibilities in meta-atom paints, anti-reflective coatings, detection technology, and large area metasurface fabrications.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127761538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We present a few novel deep learning techniques for applications in photonics. Of particular interest are few-shot techniques which minimize the amount of needed training data.
我们提出了一些新的深度学习技术在光子学中的应用。特别令人感兴趣的是减少所需训练数据量的少射技术。
{"title":"Novel deep learning techniques for photonics","authors":"M. Soljačić","doi":"10.1117/12.2593843","DOIUrl":"https://doi.org/10.1117/12.2593843","url":null,"abstract":"We present a few novel deep learning techniques for applications in \u0000photonics. Of particular interest are few-shot techniques which \u0000minimize the amount of needed training data.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127973821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the last decade a host of seminal experimental results have demonstrated that properties and dynamics of molecules and solids can be modified and controlled by coupling strongly to the electromagentic field of a photonic environment, e.g. an optical cavity. For a detailed understanding of such changes it becomes necessary to use first-principles approaches to strong light-matter interactions. In this talk I will discuss the fundamental setting for such ab-initio methods, the Pauli-Fierz quantum field theory in Coulomb gauge, introduce quantum-electrodynamical density-functional theory as an efficient and accurate simulation technique and highlight novel effects that become accessible. Among others I demonstrate how conduction and absorption properties are modified, how collective strong coupling can induce strong local modifications and how bound states in the continuum appear.
{"title":"Novel effects in strong light-matter coupling","authors":"M. Ruggenthaler","doi":"10.1117/12.2593707","DOIUrl":"https://doi.org/10.1117/12.2593707","url":null,"abstract":"In the last decade a host of seminal experimental results have demonstrated that properties and dynamics of molecules and solids can be modified and controlled by coupling strongly to the electromagentic field of a photonic environment, e.g. an optical cavity. For a detailed understanding of such changes it becomes necessary to use first-principles approaches to strong light-matter interactions. \u0000 \u0000In this talk I will discuss the fundamental setting for such ab-initio methods, the Pauli-Fierz quantum field theory in Coulomb gauge, introduce quantum-electrodynamical density-functional theory as an efficient and accurate simulation technique and highlight novel effects that become accessible. Among others I demonstrate how conduction and absorption properties are modified, how collective strong coupling can induce strong local modifications and how bound states in the continuum appear.","PeriodicalId":389503,"journal":{"name":"Metamaterials, Metadevices, and Metasystems 2021","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130115377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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