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Superoscillatory wave forms, i.e., waves that locally oscillate faster than their highest Fourier component, possess unusual properties that make them of great interest from quantum mechanics to signal processing. However, the more…

数学物理 · 物理学 2016-08-03 Eugene Tang , Lovneesh Garg , Achim Kempf

Millimeter wave (mmWave) and sub-THz communications, foreseen for sixth generation (6G), suffer from high propagation losses which affect the network coverage. To address this point, smart entities such as network-controlled repeaters…

信号处理 · 电气工程与系统科学 2024-02-19 Diego A. Sousa , Fco. Rafael M. Lima , Victor F. Monteiro , Tarcisio F. Maciel , Behrooz Makki

We characterize the variational power of quantum circuit tensor networks in the representation of physical many-body ground-states. Such tensor networks are formed by replacing the dense block unitaries and isometries in standard tensor…

量子物理 · 物理学 2022-04-01 Reza Haghshenas , Johnnie Gray , Andrew C. Potter , Garnet Kin-Lic Chan

In this work, modulation of periodic interfacial waves on a conduit of viscous liquid is explored utilizing Whitham theory and Nonlinear Schr\"odinger (NLS) theory. Large amplitude periodic wave modulation theory does not require…

斑图形成与孤子 · 物理学 2017-03-14 Michelle D. Maiden , Mark. A. Hoefer

Predictive coding (PC) is a biologically plausible alternative to standard backpropagation (BP) that minimises an energy function with respect to network activities before updating weights. Recent work has improved the training stability of…

机器学习 · 计算机科学 2026-05-25 Francesco Innocenti , El Mehdi Achour , Rafal Bogacz

We demonstrate parametric coupling between two modes of a silicon nitride membrane. We achieve the coupling by applying an oscillating voltage to a sharp metal tip that approaches the membrane surface to within a few 100 nm. When the…

Cell-Free massive MIMO networks provide huge power gains and resolve inter-cell interference by coherent processing over a massive number of distributed instead of co-located antennas in access points (APs). Cost-efficient hardware is…

信号处理 · 电气工程与系统科学 2023-05-23 Yibo Wu , Luca Sanguinetti , Ulf Gustavsson , Alexandre Graell i Amat , Henk Wymeersch

The modeling of optical wave propagation in optical fiber is a task of fast and accurate solving the nonlinear Schr\"odinger equation (NLSE), and can enable the optical system design, digital signal processing verification and fast waveform…

信号处理 · 电气工程与系统科学 2022-05-17 Hang Yang , Zekun Niu , Haochen Zhao , Shilin Xiao , Weisheng Hu , Lilin Yi

We consider the problem of sliding motion of a charge-density-wave subject to static disorder within an elastic medium model. Starting with a field-theoretical formulation, which allows exact disorder averaging, we propose a self-consistent…

无序系统与神经网络 · 物理学 2009-10-30 C. R. Werner , U. Eckern

This paper deals with the problem of inferring the signals and parameters that cause neural activity to occur. The ultimate challenge being to unveil brain's connectivity, here we focus on a microscopic vision of the problem, where single…

统计计算 · 统计学 2015-11-13 Pau Closas , Antoni Guillamon

We numerically demonstrate a new type of waveform-selective metasurface that senses the difference in incoming waveforms or pulse widths at the same frequency. Importantly, the proposed structure contains precise rectifier circuits that,…

This paper proposes a novel, rigorous and simple Fourier-transformation approach to study resonances in a perfectly conducting slab with finite number of subwavelength slits of width $h\ll 1$. Since regions outside the slits are variable…

数值分析 · 数学 2020-12-29 Jiaxin Zhou , Wangtao Lu

By using an elegant response function theory, which does not require matching of the messy boundary conditions, we investigate the surface plasmon excitations in the multicoaxial cylindrical cables made up of negative-index metamaterials.…

材料科学 · 物理学 2015-06-16 M. S. Kushwaha , B. Djafari-Rouhani

An inhomogeneous anisotropic physical model of the brain cortex is presented that predicts the emergence of non--evanescent (weakly damped) wave--like modes propagating in the thin cortex layers transverse to both the mean neural fiber…

生物物理 · 物理学 2020-04-29 Vitaly L. Galinsky , Lawrence R. Frank

Understanding the coordinated activity underlying brain computations requires large-scale, simultaneous recordings from distributed neuronal structures at a cellular-level resolution. One major hurdle to design high-bandwidth,…

神经与进化计算 · 计算机科学 2018-09-18 Tong Wu , Wenfeng Zhao , Edward Keefer , Zhi Yang

The curvature of a magnetic membrane was presented as a means of inducing nonreciprocities in the spin-wave (SW) dispersion relation (see [Ot\'alora et al. Phys. Rev. Lett., 2016 117, 227203] and [Ot\'alora et al. Phys. Rev. B., 2017 95,…

In this paper, modulation instability and nonlinear supratransmission are investigated in a one-dimensional chain of atoms using cubic-quartic nonlinearity coefficients. As a result, we establish the discrete nonlinear evolution equation by…

斑图形成与孤子 · 物理学 2023-08-09 Alphonse Houwe , Souleymanou Abbagari , Lanre Akinyemi , Serge Yamigno Doka , Kofane Timoleon Crepin

Localized persistent neural activity can encode delayed estimates of continuous variables. Common experiments require that subjects store and report the feature value (e.g., orientation) of a particular cue (e.g., oriented bar on a screen)…

神经元与认知 · 定量生物学 2024-08-01 Heather L Cihak , Zachary P Kilpatrick

We characterize the practical receiver in a wide range of signal intensity for optical wireless communication, from discrete pulse regime to continuous waveform regime. We first propose a statistical non-linear model based on the…

信息论 · 计算机科学 2020-02-10 Zhimeng Jiang , Chen Gong , Zhengyuan Xu

There is mounting evidence that lipid bilayers display conductive properties. However, when interpreting the electrical response of biological membranes to voltage changes, they are commonly considered as inert insulators. However, lipid…

生物物理 · 物理学 2022-11-24 Karis A. Zecchi , Thomas Heimburg