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Time-varying nanostructures allow us to control the spatial and temporal properties of light. The temporal modulation of the nanostructures constitutes an additional degree of freedom to control their scattering properties on demand and in…

This paper proposes a deep learning-based beamforming design framework that directly maps a target beam pattern to optimal beamforming vectors across multiple antenna array architectures, including digital, analog, and hybrid beamforming.…

Signal Processing · Electrical Eng. & Systems 2025-10-14 Hongpu Zhang , Shu Sun , Hangsong Yan , Jianhua Mo

End-to-end optimization of diffractive optical elements (DOEs) profile through a digital differentiable model combined with computational imaging have gained an increasing attention in emerging applications due to the compactness of…

Metasurfaces with bound states in the continuum (BICs) have proven to be a powerful platform for drastically enhancing light-matter interactions, improving biosensing, and precisely manipulating near- and far-fields. However, engineering…

In Transformer-based architectures, the attention mechanism is inherently permutation-invariant with respect to the input sequence's tokens. To impose sequential order, token positions are typically encoded using a scheme with either fixed…

Machine Learning · Computer Science 2023-10-31 Giorgio Angelotti

Controlling the flow of broadband electromagnetic energy at the nanoscale remains a critical challenge in optoelectronics. Surface plasmon polaritons (or plasmons) provide subwavelength localization of light, but are affected by significant…

Optics · Physics 2022-02-15 Maxim S. Elizarov , Yuri S. Kivshar , A. Fratalocchi

Low-Light Image Enhancement (LLIE) is a crucial computer vision task that aims to restore detailed visual information from corrupted low-light images. Many existing LLIE methods are based on standard RGB (sRGB) space, which often produce…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Qingsen Yan , Yixu Feng , Cheng Zhang , Guansong Pang , Kangbiao Shi , Peng Wu , Wei Dong , Jinqiu Sun , Yanning Zhang

The waveguide-integrated metasurface introduces a novel photonic chip capable of converting guided modes into free-space light. This enables functions such as off-chip beam focusing, steering, and imaging. The challenge lies in achieving…

Optics · Physics 2024-07-03 Xianjin Liu , Zhanying Ma , Dasen Zhang , Qiwen Bao , Zhenzhen Liu , Jun-Jun Xiao

Contrastive language-image pre-training aligns the features of text-image pairs in a common latent space via distinct encoders for each modality. While this approach achieves impressive performance in several zero-shot tasks, it cannot…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Christian Schlarmann , Francesco Croce , Nicolas Flammarion , Matthias Hein

It is well known that there is inherent radiation pattern distortion for the commercial base station antenna array, which usually needs three antenna sectors to cover the whole space. To eliminate pattern distortion and further enhance…

Information Theory · Computer Science 2024-10-24 Ran Ji , Chongwen Huang , Xiaoming Chen , Wei E. I. Sha , Linglong Dai , Jiguang He , Zhaoyang Zhang , Chau Yuen , Mérouane Debbah

Solid-state defect qubit systems with spin-photon interfaces show great promise for quantum information and metrology applications. Photon collection efficiency, however, presents a major challenge for defect qubits in high refractive index…

Integrated sensing and communication (ISAC) is a pivotal component of sixth-generation (6G) wireless networks, leveraging high-frequency bands and massive multiple-input multiple-output (M-MIMO) to deliver both high-capacity communication…

Information Theory · Computer Science 2025-08-07 Wenhao Hu , Zhenyao He , Wei Xu , Yongming Huang , Derrick Wing Kwan Ng , Naofal Al-Dhahir

The inverse design of metasurfaces poses a considerable challenge because of the intricate interdependencies that exist between structural characteristics and electromagnetic responses. Traditional optimization methods require significant…

Optics · Physics 2025-07-28 Sreeraj Rajan Warrier , Jayasri Dontabhaktuni

Diffusion models have emerged as the leading approach for image synthesis, demonstrating exceptional photorealism and diversity. However, training diffusion models at high resolutions remains computationally prohibitive, and existing…

Computer Vision and Pattern Recognition · Computer Science 2025-06-26 Tobias Vontobel , Seyedmorteza Sadat , Farnood Salehi , Romann M. Weber

In order to obtain a metasurface structure capable of filtering the light of a specific wavelength in the visible band, traditional method usually traverses the space consisting of possible designs, searching for a potentially satisfying…

Other Computer Science · Computer Science 2019-12-10 Xiao Han , Ziyang Fan , Chao Li , Zeyang Liu , L. Jay Guo

Topology Optimization (TO) holds the promise of designing next-generation compact and efficient photonic components. However, ensuring the optimized designs comply with fabrication constraints imposed by semiconductor foundries remains a…

Numerical Analysis · Mathematics 2024-07-02 Rahul Kumar Padhy , Aaditya Chandrasekhar

We introduce an inverse design framework based on artificial neural networks, genetic algorithms, and tight-binding calculations, capable to optimize the very large configuration space of nanoelectronic devices. Our non-linear optimization…

Mesoscale and Nanoscale Physics · Physics 2021-02-25 Kevin Ryczko , Pierre Darancet , Isaac Tamblyn

Recent advances in photonic inverse design have demonstrated the ability to automatically synthesize compact, high-performance photonic components that surpass conventional, hand-designed structures, offering a promising path toward…

Optics · Physics 2026-02-18 Hongjian Zhou , Haoyu Yang , Nicholas Gangi , Tianle Xu , Rena Huang , Jiaqi Gu

The rapid development of quantum information processors has accelerated the demand for technologies that enable quantum networking. One promising approach uses mechanical resonators as an intermediary between microwave and optical fields.…

Mesoscale and Nanoscale Physics · Physics 2021-01-19 Igor Marinković , Maxwell Drimmer , Bas Hensen , Simon Gröblacher

Virtual beam diagnostics relies on computationally intensive beam dynamics simulations where high-dimensional charged particle beams evolve through the accelerator. We propose Latent Evolution Model (LEM), a hybrid machine learning…

Accelerator Physics · Physics 2026-02-27 Mahindra Rautela , Alexander Scheinker