中文
相关论文

相关论文: A flexible and scalable, fully software-based lock…

200 篇论文

Generalized lock-in amplifiers use digital cavities with Q-factors as high as 5X10^8. In this letter, we show that generalized lock-in amplifiers can be used to analyze microwave (giga-hertz) signals with a precision of few tens of hertz.…

仪器与探测器 · 物理学 2015-06-19 Aohan Jin , Siyuan Fu , Atsunori Sakurai , Liang Liu , Fredrik Edman , Viktor Öwall , Tonu Pullerits , Khadga J. Karki

We report our experimental results on phase-sensitive amplification (PSA) in non-degenerate signal-idler configuration using ultra-narrow coherent population oscillations in metastable helium at room temperature. We achieved a high PSA gain…

量子物理 · 物理学 2016-11-03 J. Lugani , C. Banerjee , M-A. Maynard , P. Neveu , W. Xie , R. Ghosh , F. Bretenaker , F. Goldfarb

Generating high output powers while achieving narrow line single mode lasing are often mutual exclusive properties of commercial laser diodes. For this reason, efficient and scalable amplification of narrow line laser light is still a major…

This paper demonstrates designing and developing of an Ultra-Low Noise Amplifier which should potentially increase the sensitivity of the existing Magnetic Resonance Imaging (MRI) systems. The Design of the LNA is fabricated and…

仪器与探测器 · 物理学 2017-06-13 Mustafa A Kabel

In this paper, we present a GPU-accelerated prototype implementation of a portable ultrasound imaging pipeline on an Nvidia CLARA AGX development kit. The raw data is acquired with nonsteered plane wave transmit using a programmable…

医学物理 · 物理学 2024-10-03 V. Arun Kumar , A. N. Madhavanunni , Mahesh Raveendranatha Panicker

Large language models (LLMs) are transforming electronic design automation (EDA) by enhancing design stages such as schematic design, simulation, netlist synthesis, and place-and-route. Existing methods primarily focus these optimisations…

Uncalibrated instrument transformers (ITs) can degrade the performance of downstream applications that rely on the voltage and current measurements that ITs provide. It is also well-known that phasor measurement unit (PMU)-based system-wide…

系统与控制 · 电气工程与系统科学 2025-03-28 Antos Cheeramban Varghese , Anamitra Pal

We propose a novel framework, termed Fourier-Activated Adapter (FAA), for parameter-efficient fine-tuning of large pre-trained language models. By incorporating random Fourier features into lightweight adapter modules, FAA decomposes…

计算与语言 · 计算机科学 2025-12-30 Donggyun Bae , Jongil Park

A quantum-limited amplifier enables the amplification of weak signals while introducing minimal noise dictated by the principles of quantum mechanics. These amplifiers serve a broad spectrum of applications in quantum computing, including…

量子物理 · 物理学 2024-06-26 Abdul Mohamed , Elham Zohari , Jarryd J. Pla , Paul E. Barclay , Shabir Barzanjeh

A non trace-preserving map describing a probabilistic but heralded noiseless linear amplifier has recently been proposed and experimentally demonstrated. Here, we exhibit another remarkable feature of this peculiar transformation, namely…

量子物理 · 物理学 2013-01-29 C. N. Gagatsos , E. Karpov , N. J. Cerf

Autoencoders (AE) provide a useful method for nonlinear dimensionality reduction but are ill-suited for low data regimes. Conversely, Principal Component Analysis (PCA) is data-efficient but is limited to linear dimensionality reduction,…

Managing insertion losses, polarizations and device footprint is crucial in developing large-scale photonic integrated circuits (PICs). This paper presents a solution to these critical challenges by designing a semiconductor optical…

For the first time the cumulative distribution function of the crossover frequency of a contemporary operational amplifier ADA4898-2 is experimentally studied. Using a USB Lock-In amplifier, which allows automatic frequency sweep of the…

We present a SNAIL-based parametric amplifier that integrates a lumped-element impedance matching network for increased bandwidth and an on-chip pump-port filter for efficient pump delivery. The amplifier is fabricated using a single-layer…

量子物理 · 物理学 2025-05-06 V. R. Joshi , S. Hazra , A. Z. Ding , A. Miano , W. Dai , G. Umasankar , A. Kottandavida , G. Liu , L. Frunzio , M. H. Devoret

In this paper, we report a new scheme to amplify a microwave signal carried on a laser light at $\lambda$=852nm. The amplification is done via a semiconductor tapered amplifier and this scheme is used to drive stimulated Raman transitions…

原子物理 · 物理学 2015-05-18 Thomas Lévèque , Alexandre Gauguet , Walid Chaibi , Arnaud Landragin

We present Experiment Automation Agents (EAA), a vision-language-model-driven agentic system designed to automate complex experimental microscopy workflows. EAA integrates multimodal reasoning, tool-augmented action, and optional long-term…

人工智能 · 计算机科学 2026-02-18 Ming Du , Yanqi Luo , Srutarshi Banerjee , Michael Wojcik , Jelena Popovic , Mathew J. Cherukara

Linear transformations are cornerstone operations utilized in modern computing, but are computationally expensive on current electronic platforms. Optical computing has been positioned as a new computing solution, promising high speed and…

光学 · 物理学 2025-12-29 Kevin Zelaya , Jonathan Friedman , Mohammad-Ali Miri

Recent progress in quantum computing and the development of novel detector technologies for astrophysics is driving the need for high-gain, broadband, and quantum-limited amplifiers. We present a purely traveling-wave parametric amplifier…

量子物理 · 物理学 2023-06-27 Nikita Klimovich , Peter Day , Shibo Shu , Byeong Ho Eom , Henry Leduc , Andrew Beyer

Independent component analysis (ICA) is popular in many applications, including cognitive neuroscience and signal processing. Due to computational constraints, principal component analysis is used for dimension reduction prior to ICA…

统计方法学 · 统计学 2017-10-03 Benjamin B. Risk , David S. Matteson , David Ruppert

In this paper we propose a linear variable screening method for computer experiments when the number of input variables is larger than the number of runs. This method uses a linear model to model the nonlinear data, and screens the…

统计方法学 · 统计学 2020-06-16 Chunya Li , Daijun Chen , Shifeng Xiong