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We describe measurements on microwave coplanar resonators designed for quantum bit experiments. Resonators have been patterned onto sapphire and silicon substrates, and quality factors in excess of a million have been observed. The resonant…

超导电性 · 物理学 2009-11-13 J. E. Healey , T. Lindstrom , M. S. Colclough , C. M. Muirhead , A. Ya Tzalenchuk

Fine tuning distributed systems is considered to be a craftsmanship, relying on intuition and experience. This becomes even more challenging when the systems need to react in near real time, as streaming engines have to do to maintain…

分布式、并行与集群计算 · 计算机科学 2018-09-17 Luis M. Vaquero , Felix Cuadrado

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…

New, fundamental resonant properties of laser resonators are theoretically predicted and experimentally demonstrated. These resonances occur either in the time dependence of the beam width and that of beam radius of curvature of the…

光学 · 物理学 2015-06-05 A. Kohazi-Kis , J. Klebniczki , M. Gorbe , P. Nagy

Repetitive wet thermal oxidations of a tapered oxide aperture in a micropillar structure are demonstrated. After each oxidation step the confined optical modes are analyzed at room temperature. Three regimes are identified. First, the…

The inability to efficiently tune the optical properties of waveguiding structures has been one of the major hurdles for the future scalability of integrated photonic systems. In silicon photonics, although dynamic tuning has been achieved…

光学 · 物理学 2017-10-10 You-Chia Chang , Samantha P. Roberts , Brian Stern , Michal Lipson

On-chip nonlinear photonic conversion functions with wide and precise tunability as well as high conversion efficiency are highly desirable for a wide range of applications. Photonic crystal micro-ring resonators (PhCR) facilitate efficient…

光学 · 物理学 2024-11-14 Jiaqi Li , Yanfeng Zhang , Jinjie Zeng , Siyuan Yu

Fully reconfigurable add-drop filters (ADFs) have important applications in optical communication and information processing. Here we demonstrate a broadly tunable add-drop filter based on a double-disk cavity optomechanical system,…

光学 · 物理学 2022-11-23 Yuechen Lei , Zhi-Gang Hu , Min Wang , Yi-Meng Gao , Zhanchun Zuo , Xiulai Xu , Bei-Bei Li

Photo finishing tuning aims to automate the manual tuning process of the photo finishing pipeline, like Adobe Lightroom or Darktable. Previous works either use zeroth-order optimization, which is slow when the set of parameters increases,…

图形学 · 计算机科学 2025-03-11 Jiarui Wu , Yujin Wang , Lingen Li , Zhang Fan , Tianfan Xue

This paper introduces an effcient class of adaptive stencil extension reconstruction methods based on a discontinuity feedback factor, addressing the challenges of weak robustness and high computational cost in high-order schemes,…

数值分析 · 数学 2024-10-10 Hong Zhang , Yue Zhao , Xing Ji , Kun Xu

We present an acoustic musical instrument played through a resonance model of another sound. The resonance model is controlled in real time as part of the composite instrument. Our implementation uses an electric violin, whose spatial…

声音 · 计算机科学 2020-10-06 Camille Goudeseune , Guy Garnett , Timothy Johnson

Integrated optical filter based on microring resonators plays a critical role in many applications, ranging from wavelength division multiplexing and switching to channel routing. Bandwidth tunable filters are capable of meeting the…

光学 · 物理学 2022-04-26 Xinda Lu , Nuo Chen , Boqing Zhang , Haofan Yang , Yuntian Chen , Xinliang Zhang , Jing Xu

Photonic technologies have received considerable attention for enhancement of radio-frequency (RF) electrical systems, including high-frequency analog signal transmission, control of phased arrays, analog-to-digital conversion, and signal…

Audio-to-score alignment aims at generating an accurate mapping between a performance audio and the score of a given piece. Standard alignment methods are based on Dynamic Time Warping (DTW) and employ handcrafted features. We explore the…

音频与语音处理 · 电气工程与系统科学 2020-07-29 Ruchit Agrawal , Simon Dixon

In music and audio production, attenuation of spectral resonances is an important step towards a technically correct result. In this paper we present a two-component system to automate the task of resonance equalization. The first component…

声音 · 计算机科学 2024-12-09 Maarten Grachten , Emmanuel Deruty , Alexandre Tanguy

Diffractive lenses have recently been applied to the domain of multispectral imaging in the X-ray and UV regimes where they can achieve very high resolution as compared to reflective and refractive optics. Conventionally, spectral…

图像与视频处理 · 电气工程与系统科学 2020-05-26 Evan Widloski , Ulas Kamaci , Farzad Kamalabadi

MLtuner automatically tunes settings for training tunables (such as the learning rate, the momentum, the mini-batch size, and the data staleness bound) that have a significant impact on large-scale machine learning (ML) performance.…

机器学习 · 计算机科学 2018-03-21 Henggang Cui , Gregory R. Ganger , Phillip B. Gibbons

In this paper, we propose DeepAlign, a novel approach to multi-perspective process anomaly correction, based on recurrent neural networks and bidirectional beam search. At the core of the DeepAlign algorithm are two recurrent neural…

人工智能 · 计算机科学 2020-03-25 Timo Nolle , Alexander Seeliger , Nils Thoma , Max Mühlhäuser

Superconducting microwave resonators play a pivotal role in superconducting quantum circuits. The ability to fine-tune their resonant frequencies provides enhanced control and flexibility. Here, we introduce a frequency-tunable…

Gradient-descent based iterative algorithms pervade a variety of problems in estimation, prediction, learning, control, and optimization. Recently iterative algorithms based on higher-order information have been explored in an attempt to…

机器学习 · 计算机科学 2021-03-25 Spencer McDonald , Yingnan Cui , Joseph E. Gaudio , Anuradha M. Annaswamy