IEEE Journal on Multiscale and Multiphysics Computational Techniques最新文献

Fast Well-Conditioned Volume Integral Equation Solver for Analyzing Nonlocal Optical Responses in Quantum Nanostructures

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-03-11 DOI: 10.1109/JMMCT.2025.3550117

Runwei Zhou;Dan Jiao

{"title":"Fast Well-Conditioned Volume Integral Equation Solver for Analyzing Nonlocal Optical Responses in Quantum Nanostructures","authors":"Runwei Zhou;Dan Jiao","doi":"10.1109/JMMCT.2025.3550117","DOIUrl":"https://doi.org/10.1109/JMMCT.2025.3550117","url":null,"abstract":"Solid-state spin qubits are one of the candidate platforms for future quantum computers due to their long coherence time and good controllability. However, qubits are susceptible to noise generated from external magnetic fields. In this paper, we present a fast and accurate volume integral equation solver for analyzing local/nonlocal optical responses in quantum nano-electromagnetic gate circuitry. Due to small electric sizes of quantum circuitry, conventional volume integral equation (VIE) solvers suffer from both numerical difficulties and deteriorated accuracy since the underlying numerical system is highly ill-conditioned. To overcome this problem, we introduce a well-conditioned VIE formulation. We further accelerate the VIE solution by transforming the six-dimensional integral arising from the nonlocal constitutive relation to the spectral domain using fast Fourier transform (FFT). The same FFT is also applied to efficiently compute the convolution of Green's function with equivalent volumetric currents. The resultant fast and robust VIE solver has been applied to analyze large-scale 3-D quantum gate devices. Both local and nonlocal optical responses of the devices are captured accurately and efficiently. This work offers a fast and accurate approach to guide the noise control of high-fidelity quantum gate circuitry design.","PeriodicalId":52176,"journal":{"name":"IEEE Journal on Multiscale and Multiphysics Computational Techniques","volume":"10 ","pages":"209-217"},"PeriodicalIF":1.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761369","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}

引用次数: 0

Optimal Preconditioners for Hybrid Direct-Iterative $mathcal {H}$-Matrix Solvers in Boundary Element Methods

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-03-04 DOI: 10.1109/JMMCT.2025.3547827

Omid Babazadeh;Emrah Sever;Jin Hu;Ian Jeffrey;Constantine Sideris;Vladimir Okhmatovski

{"title":"Optimal Preconditioners for Hybrid Direct-Iterative $mathcal {H}$-Matrix Solvers in Boundary Element Methods","authors":"Omid Babazadeh;Emrah Sever;Jin Hu;Ian Jeffrey;Constantine Sideris;Vladimir Okhmatovski","doi":"10.1109/JMMCT.2025.3547827","DOIUrl":"https://doi.org/10.1109/JMMCT.2025.3547827","url":null,"abstract":"The paper proposes a new approach to the fast solution of matrix equations resulting from boundary element discretization of integral equations. By hybridizing fast iterative <inline-formula><tex-math>$mathcal {H}$</tex-math></inline-formula>-matrix solvers with a fast direct <inline-formula><tex-math>$mathcal {H}$</tex-math></inline-formula>-matrix preconditioner factorization, we create a framework that can be tuned between the extremes of a direct solver and a unpreconditioned iterative solver. This tuning is largely achieved using a single numerical parameter representing the preconditioner tolerance. A more complicated scheme involving two different tolerances is also briefly considered. The proposed framework is demonstrated on a high-order accurate Locally Corrected Nyström solution of surface integral equations for PEC targets. Examples consider various scattering problems including those featuring strong physical resonances. We show that appropriately choosing the preconditioner tolerance achieves the prescribed solution accuracy with minimal CPU time. Expanding from one to two tolerance parameters further enhances the framework by providing the flexibility to dynamically adjust tolerance, enabling higher compression while maintaining accuracy and fast convergence. This adaptive strategy offers significant potential for optimizing the balance between memory usage and CPU time in the future.","PeriodicalId":52176,"journal":{"name":"IEEE Journal on Multiscale and Multiphysics Computational Techniques","volume":"10 ","pages":"187-197"},"PeriodicalIF":1.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698349","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}

引用次数: 0

Fast Domain Decomposition Algorithm Using Barycentric Interpolation and Overlapping Subdomains for 3D Multiscale Problems 针对三维多尺度问题使用巴里中心插值和重叠子域的快速域分解算法

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-03-04 DOI: 10.1109/JMMCT.2025.3547852

Nils Kielian;Marcus Stiemer

引用次数: 0

One-Stage $ O(N log N)$ Algorithm for Generating Nested Rank-Minimized Representation of Electrically Large Volume Integral Equations

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-02-20 DOI: 10.1109/JMMCT.2025.3544143

Yifan Wang;Dan Jiao

引用次数: 0

Rapid Multi-Objective Antenna Synthesis via Deep Neural Network Surrogate-Driven Evolutionary Optimization 通过深度神经网络替代驱动的进化优化实现快速多目标天线合成

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-02-20 DOI: 10.1109/JMMCT.2025.3544270

Praveen Singh;Soumyashree S. Panda;Jogesh C. Dash;Bright Riscob;Surya K. Pathak;Ravi S. Hegde

{"title":"Rapid Multi-Objective Antenna Synthesis via Deep Neural Network Surrogate-Driven Evolutionary Optimization","authors":"Praveen Singh;Soumyashree S. Panda;Jogesh C. Dash;Bright Riscob;Surya K. Pathak;Ravi S. Hegde","doi":"10.1109/JMMCT.2025.3544270","DOIUrl":"https://doi.org/10.1109/JMMCT.2025.3544270","url":null,"abstract":"Antenna synthesis is becoming increasingly challenging with tight requirements for C-SWAP (cost, size, weight and power) reduction while maintaining stringent electromagnetic performance specifications. While machine learning approaches are increasingly being explored for antenna synthesis, they are still not capable of handling large shape sets with diverse responses. We propose a branched deep convolutional neural network architecture that can serve as a drop-in replacement for a full-wave simulator (it can predict the full spectral response of reflection co-efficient, input impedance and radiation pattern). We show the utility of such models in surrogate-assisted evolutionary optimization for antenna synthesis with arbitrary specification of targeted response. Specifically, we consider the large shape set defined by the set of 16-vertexes polygonal patch antennas and consider antenna synthesis by specifying independent constraints on return loss, radiation pattern and gain. In contrast to online surrogates, our approach is an offline surrogate that is objective-agnostic; trained once, it can be used over multiple optimizations whereby the model training costs become amortized across multiple synthesis requests. Our approach outperforms evolutionary optimizations relying on full-wave solver-based fitness estimation. Specifically, we report the design, fabrication and experimental characterization of three polygon-shaped patch antennas, each fulfilling different objectives (narrow band, dual-band & wide-band). The reported methodology enables rapid synthesis (in seconds), produces verifiable sound designs and is promising for furthering data-driven design methodologies for electromagnetic wave device synthesis.","PeriodicalId":52176,"journal":{"name":"IEEE Journal on Multiscale and Multiphysics Computational Techniques","volume":"10 ","pages":"151-159"},"PeriodicalIF":1.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594292","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}

引用次数: 0

Modular Discontinuous Galerkin Time-Domain Method for General Dispersive Media With Vector Fitting 带矢量拟合的一般色散介质模块化非连续伽勒金时域法

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-02-17 DOI: 10.1109/JMMCT.2025.3542379

Tiago V. L. Amorim;Elson J. Silva;Fernando J. S. Moreira;Fernando L. Teixeira

引用次数: 0

Self Surface Charge Method for Static Field Simulation Compatible With Non-Conformal Meshes

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-02-04 DOI: 10.1109/JMMCT.2025.3538602

Zhong Yuan Pang;Bo O. Zhu

{"title":"Self Surface Charge Method for Static Field Simulation Compatible With Non-Conformal Meshes","authors":"Zhong Yuan Pang;Bo O. Zhu","doi":"10.1109/JMMCT.2025.3538602","DOIUrl":"https://doi.org/10.1109/JMMCT.2025.3538602","url":null,"abstract":"Numerical analysis of static field problems is often encountered in science and engineering. The boundary element methods based on integral equations are popular due to small number of unknowns and high computational efficiency. Conventional boundary element methods require conformal meshes on the interface between two contact dielectric objects, which are more complicated to generate than non-conformal meshes. This paper presents a boundary element integral equation method compatible with non-conformal meshes on the interface between contacting objects. In this method, surface polarization charges on a homogeneous dielectric object are the unknowns, and the relationship between the electric field and surface polarization charges are employed to establish the integral equations. The discretization of such an integral equation and the treatment for singularity integration are discussed. Since the proposed method is compatible with non-conformal meshes, it reduces the meshing complexity for dielectric objects in contact, while the number of unknowns of the proposed method is intermediate compared with conventional methods. The proposed method is general for electrostatic field, magnetostatic field and stationary current field simulations. To demonstrate the feasibility, accuracy and efficiency of this approach, numerical tests and comparison with conventional methods are presented in this paper.","PeriodicalId":52176,"journal":{"name":"IEEE Journal on Multiscale and Multiphysics Computational Techniques","volume":"10 ","pages":"160-168"},"PeriodicalIF":1.8,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637901","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}

引用次数: 0

Efficient Calculation of Magnetic Force Between Two Current-Carrying Filaments of Circular and Closed-Curve of Arbitrary Shape via Segmentation Approach

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-01-30 DOI: 10.1109/JMMCT.2025.3536795

Kirill V. Poletkin;Pavel Udalov;Alexey Lukin;Ivan Popov;Haojie Xia

{"title":"Efficient Calculation of Magnetic Force Between Two Current-Carrying Filaments of Circular and Closed-Curve of Arbitrary Shape via Segmentation Approach","authors":"Kirill V. Poletkin;Pavel Udalov;Alexey Lukin;Ivan Popov;Haojie Xia","doi":"10.1109/JMMCT.2025.3536795","DOIUrl":"https://doi.org/10.1109/JMMCT.2025.3536795","url":null,"abstract":"An approach for calculation of the magnetic force arising between two electric current-carrying filaments having a circular and closed-curve of arbitrary shape is developed. The developed approach is based on the recently formulated segmentation method applied for the calculation of the mutual induction for a similar filament system. Employing the fact that any curve can be interpolated by a set of line segments with the desired accuracy and deriving the set of formulas for calculating of the magnetic force between a circular filament and line segment, the developed approach was also successfully applied for the estimation of the distribution of magnetic force along the closed-curve in addition to the resulting one. As illustrative examples, the calculation of the magnetic force and its distribution between the circular filament and the following closed-curves such as polygons, circles and a 3D curve was efficiently performed by using the developed approach. Also, the developed method was applied for the calculation of the resultant magnetic force between the rigid bodies including permanent magnets and current-carrying coils. The results of calculation were validated successfully by using FEM method and the analytical formulas available in the literature.","PeriodicalId":52176,"journal":{"name":"IEEE Journal on Multiscale and Multiphysics Computational Techniques","volume":"10 ","pages":"137-150"},"PeriodicalIF":1.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512994","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}

引用次数: 0

An Efficient Surface-Integral-Equation Based Nyström Method With an Over-Determined Testing Scheme for Broadband Grating Scattering Modeling

IF 1.8

IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-01-29 DOI: 10.1109/JMMCT.2025.3535936

Xuyang Bai;Shurun Tan

{"title":"An Efficient Surface-Integral-Equation Based Nyström Method With an Over-Determined Testing Scheme for Broadband Grating Scattering Modeling","authors":"Xuyang Bai;Shurun Tan","doi":"10.1109/JMMCT.2025.3535936","DOIUrl":"https://doi.org/10.1109/JMMCT.2025.3535936","url":null,"abstract":"The design complexity of photonic crystals and periodic gratings has been continuously increasing, driven by exploration of their unique physical phenomena and widespread applications. However, existing approaches for scattering modeling of periodic structures potentially encounter challenges when adapting to complex configurations, especially in the context of accurate near-field analysis and frequency responses near resonance. Meanwhile, they often exhibit difficulties in computational efficiency considering broadband simulations. Therefore, the development of an efficient and general scattering modeling approach to overcome these limitations has emerged as a crucial task. In this paper, an efficient surface integration equation (SIE)-based method is developed to model the scattering properties of arbitrary-shaped 2D gratings with 1D periodicity. The SIE is solved with a Nyström approach, which incorporates a local correction scheme and a Gaussian-Legendre quadrature rule. The evaluation of periodic Green's functions is achieved by combining an advanced imaginary wavenumber extraction technique with an integral transformation approach, which significantly increase the broadband simulation efficiency. Additionally, an over-determined matrix equation is constructed by testing the SIE with redundant observation points to mitigate potential internal resonance phenomena. The proposed approach is assessed through various numerical examples involving scatterers of different shapes and arrangements to demonstrate its accuracy and efficiency. The transmissivity spectra and surface field results, considering both normal and grazing incidence, are computed and compared against traditional approaches. The method proposed is found to be superior in accuracy and efficiency, especially when complicated evanescent modes are excited, and for broadband simulations.","PeriodicalId":52176,"journal":{"name":"IEEE Journal on Multiscale and Multiphysics Computational Techniques","volume":"10 ","pages":"125-136"},"PeriodicalIF":1.8,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446272","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}

引用次数: 0

2024 Index IEEE Journal on Multiscale and Multiphysics Computational Techniques Vol. 9

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IEEE Journal on Multiscale and Multiphysics Computational Techniques Pub Date : 2025-01-23 DOI: 10.1109/JMMCT.2025.3533516

引用次数: 0