Electromagnetic Science最新文献_第2页

Unlock the Potentials of Large-Element-Spacing Arrays: A Meta-Lens Solution for Grating-Lobe Suppression and Gain Enhancement 解锁大元间距阵列的潜力：用于光栅瓣抑制和增益增强的元透镜解决方案

Electromagnetic Science Pub Date : 2024-12-01 DOI: 10.23919/emsci.2024.0030

Zhengmei Wang;Shan Lin;Yuehe Ge;Zhizhang Chen;Jingjing Zhao;Jiahong Chen;Ziheng Zhou;Trevor S. Bird

{"title":"Unlock the Potentials of Large-Element-Spacing Arrays: A Meta-Lens Solution for Grating-Lobe Suppression and Gain Enhancement","authors":"Zhengmei Wang;Shan Lin;Yuehe Ge;Zhizhang Chen;Jingjing Zhao;Jiahong Chen;Ziheng Zhou;Trevor S. Bird","doi":"10.23919/emsci.2024.0030","DOIUrl":"https://doi.org/10.23919/emsci.2024.0030","url":null,"abstract":"Large-element-spacing (LES) antenna arrays present an attractive proposition with their cost-effectiveness and simplified structures. However, they often encounter the challenge of high-level grating lobes. This paper proposes a novel meta-lens methodology to effectively address the grating lobe issue in fixed-beam LES arrays. The proposed approach involves strategically positioning a meta-lens above the LES arrays at a suitable vertical distance. This setup enables precise manipulation and compensation of the near-field phase, resulting in the suppression or elimination of grating lobes without introducing additional design complexity. Comprehensive theoretical analyses, meticulous design calculations employing efficient numerical methods, rigorous field simulations, and practical experiments are conducted. The results demonstrate that our meta-lens solution achieves significant gratinglobe suppressions and substantial gain enhancements with only a marginal increase in system profile or volume. The proposed metalens approach is versatile and applicable to various LES antenna arrays, including sparse/thinned arrays, regardless of their size, element spacing, and configuration (uniform or non-uniform, periodic or aperiodic).","PeriodicalId":100402,"journal":{"name":"Electromagnetic Science","volume":"2 4","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10850522","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-Scale Multi-Domain Hybrid Finite Element Modeling of Light Propagation 光传播的多尺度多域混合有限元建模

Electromagnetic Science Pub Date : 2024-12-01 DOI: 10.23919/emsci.2024.0023

Jingwei Wang;Zhanwen Wang;Lida Liu;Yuntian Chen

{"title":"Multi-Scale Multi-Domain Hybrid Finite Element Modeling of Light Propagation","authors":"Jingwei Wang;Zhanwen Wang;Lida Liu;Yuntian Chen","doi":"10.23919/emsci.2024.0023","DOIUrl":"https://doi.org/10.23919/emsci.2024.0023","url":null,"abstract":"We revisit finite element method of modeling multi-scale photonic/electromagnetic devices via the proposed beam basis function, in combination with domain decompositions. Our approach ensures mathematical and physical consistency, can also handle multi-scale computational tasks efficiently with the assistance of the damping block-Jacobi iterative solver. By implementing the first-order Robin transmission condition at the interfaces between neighboring subdomains and introducing the dual “current” variables, we can significantly reduce the computational burden and communication data volume during the iterative solving process. The theoretical foundation and detailed implementation procedures are presented, accompanied with two representative examples. The first example is a refractive-diffractive hybrid optical system with feature size contrast up to 10<sup>4</sup>, while the second example is the free surface optical system wherein the geometric ray tracing algorithm is inadequate. The obtained results for the two examples show excellent agreement with the standard finite element method (standard FEM) with significantly reducing the number of meshes required for computation and memory usages to nearly one-fifth. Since the computational time is inversely proportional to the number of decomposed subdomains <tex>$(N)$</tex> under the parallel computing configuration, the computational time in our work is approximately reduced to <tex>$1/3N$</tex> of that using standard FEM for the two examples.","PeriodicalId":100402,"journal":{"name":"Electromagnetic Science","volume":"2 4","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10850507","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Advances in Reconfigurable Electromagnetic Surfaces: Engineering Design, Full-Wave Analysis, and Large-Scale Optimization 可重构电磁表面的最新进展：工程设计、全波分析和大规模优化

Electromagnetic Science Pub Date : 2024-09-01 DOI: 10.23919/emsci.2024.0020

Incheol Jung;Zhen Peng;Yahya Rahmat-Samii

{"title":"Recent Advances in Reconfigurable Electromagnetic Surfaces: Engineering Design, Full-Wave Analysis, and Large-Scale Optimization","authors":"Incheol Jung;Zhen Peng;Yahya Rahmat-Samii","doi":"10.23919/emsci.2024.0020","DOIUrl":"https://doi.org/10.23919/emsci.2024.0020","url":null,"abstract":"This paper presents a comprehensive review of recent advances in reconfigurable electromagnetic (EM) surfaces. The discussion is organized around three key aspects of reconfigurable EM surfaces: unit cell engineering design, full-wave numerical analysis, and large-scale optimization techniques. Numerous references are provided to facilitate further exploration of this compelling and timely subject. To address the above three key aspects, we conduct an extensive examination of the design process for metasurfaces in reconfigurable devices. This involves evaluating the design methodology of unit cells, EM simulation techniques tailored for highly complex structures, and innovative optimization methods suitable for scenarios with numerous variables. In scenarios featuring reconfigurability for real-time manipulation of EM waves to meet the requirements of emerging communication environments, the optimization cost function is defined with multiple variables, exhibiting intricate behavior in the design space. Consequently, it necessitates an optimization methodology capable of handling high-dimensional functions without getting trapped in local minima. Moreover, the intricate geometries of metasurface devices preclude analytical solutions, necessitating high-performance full-wave solvers capable of providing highly accurate simulations with minimal computational expense. Key concepts and details pertaining to the aforementioned design stages are presented in a unified manner, along with representative examples.","PeriodicalId":100402,"journal":{"name":"Electromagnetic Science","volume":"2 3","pages":"1-25"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10719653","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Compact Dual-Band Quasi-Elliptic Filter Employing Meander-Line- and CRLH-Based SIW Triplets 采用基于蜿蜒线和 CRLH 的 SIW 三元组的紧凑型双频准椭圆滤波器

Electromagnetic Science Pub Date : 2024-09-01 DOI: 10.23919/emsci.2024.0017

Yilong Zhu;Yuandan Dong;Lin Gu;Deisy Formiga Mamedes;Jens Bornemann

{"title":"A Compact Dual-Band Quasi-Elliptic Filter Employing Meander-Line- and CRLH-Based SIW Triplets","authors":"Yilong Zhu;Yuandan Dong;Lin Gu;Deisy Formiga Mamedes;Jens Bornemann","doi":"10.23919/emsci.2024.0017","DOIUrl":"https://doi.org/10.23919/emsci.2024.0017","url":null,"abstract":"A compact dual-band quasi-elliptic filter with high selectivity is developed and investigated in this communication. It employs two hybrid-structure substrate integrated waveguide (SIW) triplets, which show completely inverse transfer responses under the same conditions of inductive cross coupling. The first meander-line-based triplet is able to produce a transmission zero (TZ) above the passband. Whereas the second SIW triplet,which is composed by a composite right/left-handed (CRLH) resonator, creates a TZ below the passband. By utilizing these features, a dual-band quasi-elliptic filter based on SIW dual-mode resonances (TE\u0000<inf>101</inf>\u0000 and TE\u0000<inf>201</inf>\u0000), whose operating frequencies are allocated at 8 GHz and 10 GHz, is designed for demonstration. The design process, principles, and experiments are carefully described in this communication. The measured and simulated results are in good agreement, indicating excellent electrical performance with low loss, compact device size and high selectivity. The most notable point is that a dual-band quasi-elliptic filter on SIW platforms is obtained with all inductive couplings for the first time, which shows a unique benefit in eliminating negative-coupling structures while permitting miniaturization for SIW dual-band filter design.","PeriodicalId":100402,"journal":{"name":"Electromagnetic Science","volume":"2 3","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10719601","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-Demand Photon Storage and Retrieval with a Solid-State Photon Molecule at Room Temperature 利用固态光子分子在室温下按需存储和检索光子

Electromagnetic Science Pub Date : 2024-09-01 DOI: 10.23919/emsci.2024.0021

Ze-Yu Luo;Tong Zhang;Yi-Teng Ye;Yun-Fei Wang;Cheng-Cheng Yu;Zhi-Cong Luo;Yi-Jie Zhang;Mo-Chi Xu;Barry C. Sanders;Hui Wang;Chao-Yang Lu;Jian-Wei Pan

{"title":"On-Demand Photon Storage and Retrieval with a Solid-State Photon Molecule at Room Temperature","authors":"Ze-Yu Luo;Tong Zhang;Yi-Teng Ye;Yun-Fei Wang;Cheng-Cheng Yu;Zhi-Cong Luo;Yi-Jie Zhang;Mo-Chi Xu;Barry C. Sanders;Hui Wang;Chao-Yang Lu;Jian-Wei Pan","doi":"10.23919/emsci.2024.0021","DOIUrl":"https://doi.org/10.23919/emsci.2024.0021","url":null,"abstract":"Deterministically achieving on-chip photon storage and retrieval is a fundamental challenge for integrated photonics. Moreover, this requirement is increasingly urgent as photon storage and retrieval is crucial to realize truly scalable room-temperature quantum computing. However, most of existing quantum memories integrated on chips must either work at cryogenic temperature or else are strongly coupled with the environment, which hugely reduces the efficiency. Here, we propose an on-chip room-temperature quantum memory comprising three coupled microcavities, which presents an ideal dark state decoupled by a waveguide, thereby allowing on-demand photon storage and retrieval with high efficiency and high fidelity simultaneously. Furthermore, we demonstrate that the single-photon temporal duration can be increased or decreased by a factor of 10\u0000<sup>3</sup>\u0000, thereby enabling many crucial quantum applications. Our error-robust approach highlights the potential for a solid-state photonic molecule for use as on-chip quantum memory and for optical quantum computing.","PeriodicalId":100402,"journal":{"name":"Electromagnetic Science","volume":"2 3","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10719602","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Path to High-Temperature Josephson Multi-Junction Devices 通往高温约瑟夫森多结器件之路

Electromagnetic Science Pub Date : 2024-09-01 DOI: 10.23919/emsci.2024.0009

Xu Wang;Fucong Chen;Zefeng Lin;Shibing Tian;Chunguang Li;Victor Kornev;Nikolay Kolotinskiy

引用次数: 0

Photon-Counting Spectrometers Based on Superconducting Nanowire Single-Photon Detectors 基于超导纳米线单光子探测器的光子计数光谱仪

Electromagnetic Science Pub Date : 2024-09-01 DOI: 10.23919/emsci.2024.0019

Mingzhong Hu;Jingyuan Zheng;Kaiyu Cui;Wei Zhang;Yidong Huang

{"title":"Photon-Counting Spectrometers Based on Superconducting Nanowire Single-Photon Detectors","authors":"Mingzhong Hu;Jingyuan Zheng;Kaiyu Cui;Wei Zhang;Yidong Huang","doi":"10.23919/emsci.2024.0019","DOIUrl":"https://doi.org/10.23919/emsci.2024.0019","url":null,"abstract":"Optical spectrum analysis provides a wealth of information about the physical world. Throughout the development of optical spectrum analysis, sensitivity has been one of the major topics and has become essential in applications dealing with faint light. Various high-sensitivity optical detection technologies have been applied in optical spectrum analysis to enhance its sensitivity to single-photon level. As an emerging single-photon detection technology, superconducting nanowire single-photon detectors (SNSPDs) have many impressive features such as high detection efficiency, broad operation bandwidth, small timing jitter, and so on, which make them promising for enhancing the performance of optical spectral analysis. Diverse schemes for photon-counting spectrometers based on SNSPDs have been demonstrated. This article reviews these impressive works and prospects for the future development of this technology. Further breakthroughs can be expected in its theories, device performance, applications, and combinations with in-sensor computing, promoting it to be a mature and versatile solution for optical spectrum analysis on ultra-faint light.","PeriodicalId":100402,"journal":{"name":"Electromagnetic Science","volume":"2 3","pages":"1-16"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10719616","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Directivity of Radiating Quantum Electromagnetic Systems 论辐射量子电磁系统的指向性

Electromagnetic Science Pub Date : 2024-09-01 DOI: 10.23919/emsci.2024.0022

Said Mikki

引用次数: 0

Case Studies on Time-Dependent Ginzburg-Landau Simulations for Superconducting Applications 超导应用中与时间相关的金兹堡-朗道模拟案例研究

Electromagnetic Science Pub Date : 2024-06-01 DOI: 10.23919/emsci.2024.0012

Cun Xue;Qing-Yu Wang;Han-Xi Ren;An He;Alejandro V. Silhanek

{"title":"Case Studies on Time-Dependent Ginzburg-Landau Simulations for Superconducting Applications","authors":"Cun Xue;Qing-Yu Wang;Han-Xi Ren;An He;Alejandro V. Silhanek","doi":"10.23919/emsci.2024.0012","DOIUrl":"https://doi.org/10.23919/emsci.2024.0012","url":null,"abstract":"The macroscopic electromagnetic properties of type-II superconductors are mainly influenced by the behavior of microscopic superconducting flux quantum units. Time-dependent Ginzburg-Landau (TDGL) theory is a well-known tool for describing and examining both the statics and dynamics of these superconducting entities. It have been instrumental in replicating and elucidating numerous experimental results over the past decades. This paper provides a comprehensive overview of the progress in TDGL simulations, focusing on three key aspects of superconductor applications. We delve first into vortex rectification in supercon-ductors described within the TDGL framework, specifically highlighting the achievement of superconducting diode effect through asymmetric pinning landscapes and the reversible manipulation of vortex ratchets with dynamic pinning landscapes. In terms of the achievements of TDGL simulations concerning the critical current density of superconductors, we emphasize particularly on the optimization of pinning sites, including vortex pinning and dynamics in polycrystalline Nb\u0000<inf>3</inf>\u0000Sn with grain boundaries. In the third aspect, we concentrate on numerical modeling of vortex penetration and dynamics in superconducting radio-frequency cavities, including a discussion on superconductor-insulator-superconductor multilayer structures. Finally, we present key findings, insights, and perspectives derived from the discussed simulations.","PeriodicalId":100402,"journal":{"name":"Electromagnetic Science","volume":"2 2","pages":"1-20"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10636176","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141985912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiscale Approach for Unconventional Superconductors 非常规超导体的多尺度方法

Electromagnetic Science Pub Date : 2024-06-01 DOI: 10.23919/emsci.2024.0010

Yangmu Li;Chang Liu;Wenxin Cheng;Jiaxin Li

{"title":"Multiscale Approach for Unconventional Superconductors","authors":"Yangmu Li;Chang Liu;Wenxin Cheng;Jiaxin Li","doi":"10.23919/emsci.2024.0010","DOIUrl":"https://doi.org/10.23919/emsci.2024.0010","url":null,"abstract":"The remarkable electromagnetic characteristics inherent in unconventional superconductors have catalyzed the advancement of numerous technological innovations, spanning from energy-efficient power transmission and high-field magnets to sensitive detectors and quantum computing systems. Central to the functionality of these applications lies the superconducting characteristics, which govern pivotal phenomena including Cooper pair formation and macroscopic phase coherence, resulting in the attainment of zero electrical resistance, complete diamagnetism, and the Josephson tunneling effect. The complex phases and orders in these materials significantly alter their key electronic and magnetic properties, posing challenges in elucidating the underlying physics and further enhancing their functional capabilities. The multiscale approach, representing a useful strategy for understanding materials across diverse length scales using a variety of experimental tools, can reveal intricate details in real and reciprocal spaces, facilitating cross-validation. In this brief review, we introduce the principle of the multiscale approach along with examples demonstrating its efficacy in unraveling the electronic and magnetic properties of unconventional superconductors.","PeriodicalId":100402,"journal":{"name":"Electromagnetic Science","volume":"2 2","pages":"1-19"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10636173","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141985889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0