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Energy-based models (EBMs) are powerful probabilistic models, but suffer from intractable sampling and density evaluation due to the partition function. As a result, inference in EBMs relies on approximate sampling algorithms, leading to a…

机器学习 · 计算机科学 2020-01-10 Dieterich Lawson , George Tucker , Bo Dai , Rajesh Ranganath

Photoacoustic computed tomography (PACT) is an emerging computed imaging modality that exploits optical contrast and ultrasonic detection principles to form images of the absorbed optical energy density within tissue. When the imaging…

医学物理 · 物理学 2016-11-15 Qiwei Sheng , Kun Wang , Thomas P. Matthews , Jun Xia , Liren Zhu , Lihong V. Wang , Mark A. Anastasio

Intuitive physics is pivotal for human understanding of the physical world, enabling prediction and interpretation of events even in infancy. Nonetheless, replicating this level of intuitive physics in artificial intelligence (AI) remains a…

人工智能 · 计算机科学 2023-08-22 Bo Dai , Linge Wang , Baoxiong Jia , Zeyu Zhang , Song-Chun Zhu , Chi Zhang , Yixin Zhu

A learning path is proposed starting from the characterization of a sound wave, showing how human beings emit articulate sounds in the language, introducing psychoacoustics, i.e. how the sound interacts with ears and it is transduced into…

物理教育 · 物理学 2016-01-08 Vera Montalbano

Acoustic-to-articulatory inversion (AAI) is to obtain the movement of articulators from speech signals. Until now, achieving a speaker-independent AAI remains a challenge given the limited data. Besides, most current works only use audio…

声音 · 计算机科学 2022-04-05 Jianrong Wang , Jinyu Liu , Longxuan Zhao , Shanyu Wang , Ruiguo Yu , Li Liu

The strong non-linear optical response of atomic systems in electromagnetically induced transparency (EIT) states is considered as a means to detect the presence of small perturbations to steady states. For the 3-level system, expressions…

原子物理 · 物理学 2023-09-06 Aneesh Ramaswamy , Svetlana A. Malinovskaya

Absorbing airborne noise at frequencies below 300 Hz is a particularly vexing problem due to the absence of natural sound absorbing materials at these frequencies. The prevailing solution for low-frequency sound absorption is the use of…

应用物理 · 物理学 2020-01-15 Xinxin Guo , Romain Fleury , Hervé Lissek

Electromagnetic (EM) sensing is a wide-spread contactless examination technique in science, engineering and military. However, conventional sensing systems are mostly lack of intelligence, which not only require expensive hardware and…

信号处理 · 电气工程与系统科学 2019-12-06 Hao-Yang Li , Han-Ting Zhao , Meng-Lin Wei , Heng-Xin Ruan , Ya Shuang , Tie Jun Cui , Lianlin Li

Accessing the low-energy non-equilibrium dynamics of materials and their polaritons with simultaneous high spatial and temporal resolution has been a bold frontier of electron microscopy in recent years. One of the main challenges lies in…

EEG is a non-invasive, safe, and low-risk method to record electrophysiological signals inside the brain. Especially with recent technology developments like dry electrodes, consumer-grade EEG devices, and rapid advances in machine…

机器学习 · 计算机科学 2025-06-23 Tri Duc Ly , Gia H. Ngo

The possibility of the precise measurement of the electron beam energy using absorption of radiation by electrons in a static and homogeneous magnetic field in a range up to a few hundred GeV energies, was considered in [1]. With the…

加速器物理 · 物理学 2017-08-02 R. A. Melikian

Compressive sensing is the newly emerging method in information technology that could impact array beamforming and the associated engineering applications. However, practical measurements are inevitably polluted by noise from external…

信息论 · 计算机科学 2013-07-12 Siyang Zhong , Xun Huang

Expected improvement (EI) is one of the most widely used acquisition functions in Bayesian optimization (BO). Despite its proven success in applications for decades, important open questions remain on the theoretical convergence behaviors…

机器学习 · 统计学 2025-02-13 Jingyi Wang , Haowei Wang , Nai-Yuan Chiang , Cosmin G. Petra

Absorption of electromagnetic energy by a dissipative material is one of the most fundamental electromagnetic processes that underlies a plethora of applied problems, including sensing and molecular detection, radar detection, wireless…

光学 · 物理学 2020-03-31 Alexey Proskurin , Andrey Bogdanov , Denis G. Baranov

Electromagnetically Induced Transparency (EIT) cooling is a well-established method for preparing trapped ion systems in their motional ground state. However, isolating a three-level system, as required for EIT cooling, is often challenging…

原子物理 · 物理学 2026-01-12 Katya Fouka , Athreya Shankar , Ting Rei Tan , Arghavan Safavi-Naini

A plasmonic nanoantenna probed by a plane-polarized optical field in a medium with no gain materials can show zero absorption or even amplification, while exhibiting maximal polarizability. This occurs through coupling to an adjacent…

光学 · 物理学 2019-08-28 Ali Panahpour , Abolfazl Mahmoodpoor , Andrei V. Lavrinenko

We present possible design concepts for a tractor atom interferometer (TAI) based on three-dimensional confinement and transport of ultracold atoms. The confinement reduces device size and wave-packet dispersion, enables arbitrary holding…

Interferometry can measure the shape or the material density of a system that could not be measured otherwise by recording the difference between the phase change of a signal and a reference phase. This difference is always between $-\pi$…

等离子体物理 · 物理学 2022-10-20 Pierre-Alexandre Gourdain , Aidan Bachmann

We show how a strongly driven single-mode oscillator coupled to a first-order dynamical system gives rise to induced absorption or gain of a weak probe beam, and associated fast or slow light depending on the detuning conditions. We derive…

介观与纳米尺度物理 · 物理学 2021-12-06 Marco Clementi , Matteo Galli , Liam O'Faolain , Dario Gerace

We suggest a scheme for obtaining negative refraction with low absorption in a left-handed atomic system.Under the the appropriate conditions,the atomic system displays negative refraction with negative permittivity and…

量子物理 · 物理学 2026-05-12 Shun-Cai Zhao , Zheng-Dong Liu , Gen Li , Nian Liu