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The gain spectrum of an Erbium-Doped Fiber Amplifier (EDFA) has a complex dependence on channel loading, pump power, and operating mode, making accurate modeling difficult to achieve. Machine Learning (ML) based modeling methods can achieve…

Networking and Internet Architecture · Computer Science 2025-03-24 Agastya Raj , Dan Kilper , Marco Ruffini

We develop an analytic method for implementing the IR-resummation of arXiv:1404.5954, which allows one to correctly and consistently describe the imprint of baryon acoustic oscillations (BAO) on statistical observables in large-scale…

Cosmology and Nongalactic Astrophysics · Physics 2020-03-18 Matthew Lewandowski , Leonardo Senatore

Intelligent reflecting surface (IRS) as a promising technology rendering high throughput in future communication systems is compatible with various communication techniques such as non-orthogonal multiple-access (NOMA). In this paper, the…

Information Theory · Computer Science 2022-03-17 Yasaman Omid , S. M. Mahdi Shahabi , Cunhua Pan , Yansha Deng , Arumugam Nallanathan

Low-Rank Adaptation (LoRA) has emerged as a prominent technique for fine-tuning large foundation models. Despite its successes, the substantial parameter redundancy, which limits the capacity and efficiency of LoRA, has been recognized as a…

Machine Learning · Computer Science 2025-06-23 Jiashun Cheng , Aochuan Chen , Nuo Chen , Ziqi Gao , Yuhan Li , Jia Li , Fugee Tsung

The advent of ultra-low noise microwave amplifiers revolutionized several research fields demanding quantum-limited technologies. Exploiting a theoretical bimodal description of a linear phase-preserving amplifier, in this contribution we…

The paper theoretically establishes and studies the sub-Doppler linear optical Ramsey resonances that arise under certain conditions near centers of optical transitions in the absorption of a sufficiently weak monochromatic light beam…

Atomic Physics · Physics 2025-06-04 Azad Ch. Izmailov

Considering intelligent reflecting surface (IRS), we study a multi-cluster multiple-input-single-output (MISO) non-orthogonal multiple access (NOMA) downlink communication network. In the network, an IRS assists the communication from the…

Information Theory · Computer Science 2019-09-17 Yiqing Li , Miao Jiang , Qi Zhang , Jiayin Qin

Broadband impedance-matched Josephson parametric amplifiers are key components for high-fidelity single-shot multi-qubit readout. Nowadays, several types of impedance matched parametric amplifiers have been proposed: the first is an…

Despite the promise of Vision-Language-Action (VLA) models as generalist robotic controllers, their robustness against perceptual noise and environmental variations in out-of-distribution (OOD) tasks remains fundamentally limited by the…

Robotics · Computer Science 2026-03-30 Zhuoran Li , Zhiyang Li , Kaijun Zhou , Jinyu Gu

We apply two sparse reconstruction techniques, the least absolute shrinkage and selection operator (LASSO) and the sparse exponential mode analysis (SEMA), to two-dimensional (2D) spectroscopy. The algorithms are first tested on model data,…

Signal Processing · Electrical Eng. & Systems 2020-07-01 Zhengjun Wang , Shiwen Lei , Khadga Jung Karki , Andreas Jakobsson , Tönu Pullerits

Multiple-input multiple-output (MIMO) radar systems have been shown to achieve superior resolution as compared to traditional radar systems with the same number of transmit and receive antennas. This paper considers a distributed MIMO radar…

Information Theory · Computer Science 2016-11-15 Yao Yu , Athina P. Petropulu , H. Vincent Poor

Speaker verification systems have seen significant advancements with the introduction of Multi-scale Feature Aggregation (MFA) architectures, such as MFA-Conformer and ECAPA-TDNN. These models leverage information from various network…

Sound · Computer Science 2024-10-08 Satvik Dixit , Massa Baali , Rita Singh , Bhiksha Raj

Microwave quantum information networks require reliable transmission of single photon propagating modes over lossy channels. In this article we propose a microwave noise-less linear amplifier (NLA) suitable to circumvent the losses incurred…

Quantum Physics · Physics 2023-12-11 Hany Khalifa , Riku Jäntti , Gheorghe Sorin Paraoanu

Kinetic inductance travelling wave parametric amplifiers (KI-TWPAs) have been simulated using Keysight's Advanced Design System (ADS). A lumped element representation of a superconducting transmission line has been developed using nonlinear…

Superconductivity · Physics 2022-08-09 T. Sweetnam , D. Banys , V. Gilles , M. A. McCulloch , L. Piccirillo

The contrast performance of current eXtreme Adaptive Optics (XAO) systems can be improved by adding a second AO correction stage featuring its own wavefront sensor, deformable mirror, and real-time controller. We develop a dynamical model…

Instrumentation and Methods for Astrophysics · Physics 2022-01-28 Nelly Cerpa-Urra , Markus Kasper , Caroline Kulcsár , Henri-François Raynaud , Cedric Taïssir Heritier

Automatic speaker verification systems are vulnerable to a variety of access threats, prompting research into the formulation of effective spoofing detection systems to act as a gate to filter out such spoofing attacks. This study…

Sound · Computer Science 2022-11-21 Zhenyu Wang , John H. L. Hansen

It is challenging to improve automatic speech recognition (ASR) performance in noisy conditions with single-channel speech enhancement (SE). In this paper, we investigate the causes of ASR performance degradation by decomposing the SE…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-31 Kazuma Iwamoto , Tsubasa Ochiai , Marc Delcroix , Rintaro Ikeshita , Hiroshi Sato , Shoko Araki , Shigeru Katagiri

For a sound field observed on a sensor array, compressive sensing (CS) reconstructs the direction-of-arrival (DOA) of multiple sources using a sparsity constraint. The DOA estimation is posed as an underdetermined problem by expressing the…

Statistics Theory · Mathematics 2023-07-19 Peter Gerstoft , Angeliki Xenaki , Christoph F. Mecklenbräuker

We have developed a coupled-mode analysis framework for superconducting travelling-wave parametric amplifiers using the full Telegrapher's equations to incorporate loss-related behaviour. Our model provides an explanation of previous…

Superconductivity · Physics 2019-07-30 Songyuan Zhao , Stafford Withington , David J. Goldie , Chris N. Thomas

The image source method (ISM) is often used to simulate room acoustics due to its ease of use and computational efficiency. The standard ISM is limited to simulations of room impulse responses between point sources and omnidirectional…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-08 Zeyu Xu , Adrian Herzog , Alexander Lodermeyer , Emanuël A. P. Habets , Albert G. Prinn