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We present a novel design of a FerroElectric Fast Reactive Tuner (FE-FRT) capable of modulating Mega VAR reactive power on a sub-microsecond time scale. We show detailed analytical estimates of the performance of this device and benchmark…

加速器物理 · 物理学 2021-10-05 Ilan Ben-Zvi , Alejandro Castilla , Alick Macpherson , Nicholas Shipman

This work presents a state-of-the-art design of a Ferroelectric Fast Reactive Tuner (FE-FRT), capable of modulating high reactive power in TESLA type cavities on a microsecond time scale. The Mainz Energy-Recovering Superconducting…

加速器物理 · 物理学 2025-06-27 Ricardo Monroy-Villa , Ilan Ben-Zvi , Florian Hug , Timo Stengler

This paper introduces a newly designed cavity tuner for superconducting radio-frequency (SRF) cavity. Aiming to overcome the drawbacks of traditional tuning systems, like the limited tuning range of piezoelectric tuner and the low-speed…

加速器物理 · 物理学 2025-04-24 Ming Liu , Jiyuan Zhai , Feisi He , Zhenghui Mi

This paper describes performance of a voltage controlled phase shifter designed for a high average power and a high figure of merit. The device is a reflection-type, resonant phase shifter that utilizes ferroelectric capacitors and…

加速器物理 · 物理学 2025-09-30 Ilan Ben-Zvi , Alick Macpherson , Samuel Smith

Recent advancements have illuminated the efficacy of some tensorization-decomposition Parameter-Efficient Fine-Tuning methods like LoRA and FacT in the context of Vision Transformers (ViT). However, these methods grapple with the challenges…

计算机视觉与模式识别 · 计算机科学 2023-11-14 Dongping Chen

The Mixture-of-Experts (MoE) paradigm has emerged as a powerful approach for scaling transformers with improved resource utilization. However, efficiently fine-tuning MoE models remains largely underexplored. Inspired by recent works on…

机器学习 · 计算机科学 2024-11-14 Yilun Liu , Yunpu Ma , Shuo Chen , Zifeng Ding , Bailan He , Zhen Han , Volker Tresp

Multimodal instruction tuning has proven to be an effective strategy for achieving zero-shot generalization by fine-tuning pre-trained Large Multimodal Models (LMMs) with instruction-following data. However, as the scale of LMMs continues…

Parameter-efficient tuning (PET) aims to transfer pre-trained foundation models to downstream tasks by learning a small number of parameters. Compared to traditional fine-tuning, which updates the entire model, PET significantly reduces…

计算机视觉与模式识别 · 计算机科学 2025-08-27 Kwonyoung Kim , Jungin Park , Jin Kim , Hyeongjun Kwon , Kwanghoon Sohn

Transformer-based large pre-trained models have shown remarkable generalization ability, and various parameter-efficient fine-tuning (PEFT) methods have been proposed to customize these models on downstream tasks with minimal computational…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Zichen Miao , Wei Chen , Qiang Qiu

This paper proposes a multivariable extremum seeking scheme using Fast Fourier Transform (FFT) for a network of subsystems working towards optimizing the sum of their local objectives, where the overall objective is the only available…

最优化与控制 · 数学 2021-05-11 Dinesh Krishnamoorthy

Field Programmable Gate Array (FPGA) is widely used in acceleration of deep learning applications because of its reconfigurability, flexibility, and fast time-to-market. However, conventional FPGA suffers from the tradeoff between chip area…

Tunable lasers are essential for optical communication, spectroscopy, and precision sensing, where flexible and fast control of the laser wavelength is needed. However, conventional tunable laser systems often rely on mechanical actuation,…

In the context of engineered quantum systems, there is a demand for superconducting tunable devices able to operate with high Q-factors at power levels equivalent to only a few photons. In this work, we developed a 3D microwave reentrant…

仪器与探测器 · 物理学 2017-02-15 N. C. Carvalho , Y. Fan , M. E. Tobar

Machine learning-based compact models provide a rapid and efficient approach for estimating device behavior across multiple input parameter variations. In this study, we introduce two reverse-design algorithms that utilize these compact…

新兴技术 · 计算机科学 2025-08-29 Diego Ferrer , Jack Hutchins , Revanth Koduru , Sumeet Kumar Gupta , Admedullah Aziz

We demonstrate the active tuning of all-dielectric metasurfaces exhibiting high-quality factor (high-Q) resonances. The active control is provided by embedding the asymmetric silicon meta-atoms with liquid crystals, which allows the…

Multi-modal models excel in cross-modal tasks but are computationally expensive due to their billions of parameters. Parameter-efficient fine-tuning (PEFT) offers a solution by adding small trainable components while freezing pre-trained…

机器学习 · 计算机科学 2025-03-27 Sashuai Zhou , Hai Huang , Yan Xia

A fast and highly efficient frequency modulation at a high power level is described. The system incorporates ferroelectric phase shifters and a magic-T or a circulator. A magnetron may be considered as a potential application. The magnetron…

加速器物理 · 物理学 2025-02-20 Ilan Ben-Zvi , Nicholas Shipman

Adapting models pre-trained on large-scale datasets is a proven way to reach strong performance quickly for down-stream tasks. However, the growth of state-of-the-art mod-els makes traditional full fine-tuning unsuitable and difficult,…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Maxime Fontana , Michael Spratling , Miaojing Shi

The large models, as predicted by scaling raw forecasts, have made groundbreaking progress in many fields, particularly in natural language generation tasks, where they have approached or even surpassed human levels. However, the…

计算与语言 · 计算机科学 2025-04-25 Luping Wang , Sheng Chen , Linnan Jiang , Shu Pan , Runze Cai , Sen Yang , Fei Yang

We present an integrated scheme for dielectric drive and read-out of high-Q nanomechanical resonators which enables tuning of both the resonance frequency and quality factor with an applied DC voltage. A simple model for altering these…

介观与纳米尺度物理 · 物理学 2012-12-13 Johannes Rieger , Thomas Faust , Maximilian J. Seitner , Jörg P. Kotthaus , Eva M. Weig
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