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A generalization of the S-parameter retrieval method for finite three-dimensional inhomogeneous objects under arbitrary illumination and observation conditions is presented. The effective permittivity of such objects may be rigorously…

经典物理 · 物理学 2010-02-12 Shreyas B. Raghunathan , Neil V. Budko

We consider the transmission of classical information through a degraded broadcast channel, whose outputs are two quantum systems, with the state of one being a degraded version of the other. Yard et al. proved that the capacity region of…

量子物理 · 物理学 2019-05-03 Hao-Chung Cheng , Nilanjana Datta , Cambyse Rouzé

The recent paper (IEEE Trans. IT 69, 1680) introduced an analytical method for calculating the channel capacity without the need for iteration. This method has certain limitations that restrict its applicability. Furthermore, the paper does…

信息论 · 计算机科学 2024-03-15 Masahito Hayashi

We present a quantum information theory that allows for a consistent description of entanglement. It parallels classical (Shannon) information theory but is based entirely on density matrices (rather than probability distributions) for the…

量子物理 · 物理学 2009-10-30 Nicolas J. Cerf , Chris Adami

In this paper, we propose two algorithms for solving linear inverse problems when the observations are corrupted by noise. A proper data fidelity term (log-likelihood) is introduced to reflect the statistics of the noise (e.g. Gaussian,…

应用统计 · 统计学 2011-03-14 François-Xavier Dupé , Jalal Fadili , Jean-Luc Starck

Microwave imaging is commonly based on the solution of linearized inverse scattering problems by matched filtering algorithms, i.e., by applying the adjoint of the forward scattering operator to the observation data. A more rigorous…

图像与视频处理 · 电气工程与系统科学 2024-12-23 Matthias M. Saurer , Han Na , Marius Brinkmann , Thomas F. Eibert

Inverse problems have many applications in science and engineering. In Computer vision, several image restoration tasks such as inpainting, deblurring, and super-resolution can be formally modeled as inverse problems. Recently, methods have…

计算机视觉与模式识别 · 计算机科学 2024-09-19 Sai Bharath Chandra Gutha , Ricardo Vinuesa , Hossein Azizpour

Transcranial ultrasound imaging is currently limited by attenuation and aberration induced by the skull. First used in contrast-enhanced ultrasound (CEUS), highly echoic microbubbles allowed for the development of novel imaging modalities…

图像与视频处理 · 电气工程与系统科学 2025-11-06 Paul Xing , Antoine Malescot , Eric Martineau , Ravi Rungta , Jean Provost

In what follows we first set the context for inverse scattering in nuclear physics with a brief account of inverse problems in general. We then turn to inverse scattering which involves the S-matrix, which connects the interaction potential…

核理论 · 物理学 2012-05-03 Raymond S. Mackintosh

This paper is concerned with the classical inverse scattering problem to recover the refractive index of a medium given near or far field measurements of scattered time-harmonic acoustic waves. It contains the first rigorous proof of…

数值分析 · 数学 2015-06-19 Thorsten Hohage , Frederic Weidling

Optical imaging relies on the ability to illuminate an object, collect and analyze the light it scatters or transmits. Propagation through complex media such as biological tissues was so far believed to degrade the attainable depth as well…

光学 · 物理学 2010-09-24 S. M. Popoff , G. Lerosey , M. Fink , A. C. Boccara , S. Gigan

In contrast to the optomechanically induced transparency (OMIT) defined conventionally, the inverse OMIT behaves as coherent absorption of the input lights in the optomechanical systems. We characterize a feasible inverse OMIT in a…

量子物理 · 物理学 2015-07-10 Qin Wu , Jian-Qi Zhang , Jin-Hui Wu , Mang Feng , Zhi-Ming Zhang

Shannon's channel coding theorem characterizes the maximal rate of information that can be reliably transmitted over a communication channel when optimal encoding and decoding strategies are used. In many scenarios, however, practical…

Pride (1994, Phys. Rev. B 50 15678-96) derived the governing model of electroseismic conversion, in which Maxwell's equations are coupled with Biot's equations through an electrokinetic mobility parameter. The inverse problem of…

偏微分方程分析 · 数学 2014-06-03 Jie Chen , Maarten de Hoop

We consider an inverse spectral theory in a domain with the cavity that is bounded by a penetrable inhomogeneous medium. An ODE system is constructed piecewise through the solutions inside and outside the cavity. The ODE system is connected…

偏微分方程分析 · 数学 2016-05-18 Lung-Hui Chen

Night vision imaging is a technology that converts non-visible object to human eyes into visible image in night and other low light environments. However, the conventional night vision imaging can only directly produce grayscale image.…

图像与视频处理 · 电气工程与系统科学 2021-02-03 Deyang Duan , Yunjie Xia

We show that quantum-to-classical channels, i.e., quantum measurements, can be asymptotically simulated by an amount of classical communication equal to the quantum mutual information of the measurement, if sufficient shared randomness is…

量子物理 · 物理学 2014-11-25 Mario Berta , Joseph M. Renes , Mark M. Wilde

The promise of compressive sensing (CS) has been offset by two significant challenges. First, real-world data is not exactly sparse in a fixed basis. Second, current high-performance recovery algorithms are slow to converge, which limits CS…

机器学习 · 统计学 2017-01-17 Ali Mousavi , Richard G. Baraniuk

Inverse design represents a paradigm shift in the development of nanophotonic devices, where optimal geometries and materials are discovered by an algorithm rather than symmetry considerations or intuition. Here we present a very general…

量子物理 · 物理学 2020-04-29 Robert Bennett , Stefan Yoshi Buhmann

Passive imaging involves recording waves generated by uncontrolled, random sources and utilizing correlations of such waves to image the medium through which they propagate. In this paper, we focus on passive inverse obstacle scattering…

偏微分方程分析 · 数学 2025-11-06 Thorsten Hohage , Meng Liu