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Noise usually has an unwelcome influence on system performance. For instance, noise inevitably affects the low-frequency mechanical freedom in optomechanical experiments. However, we investigate here the beneficial effects of thermal noise…

量子物理 · 物理学 2018-12-26 Danying Yu , Min Xie , Yanbei Cheng , Bixuan Fan

The shot noise of spin polarized electrons is shown to be generically dependent upon spin-flip processes. Such a situation represents perhaps the simplest instance where the two-particle character of current fluctuations out of equilibrium…

介观与纳米尺度物理 · 物理学 2009-11-10 A. Lamacraft

In this paper a generalized postfilter algorithm design issues are presented. This postfilter is used to jointly suppress late reverberation, residual echo, and background noise. When residual echo and noise are suppressed, the best result…

声音 · 计算机科学 2013-05-07 Urmila Shrawankar , V M Thakare

This work is devoted to the study of the influence of quantization noise on the spectral characteristics of a digital signal and the assessment of spectrum measurement errors that arise due to the quantization noise of an analog-to-digital…

信号处理 · 电气工程与系统科学 2023-07-04 Anzhelika Stakhova

Stochastic Bloch equations which model the fluorescence of two level molecules and atoms, NMR experiments and Josephson junctions are investigated to illustrate the profound effect of multiplicative noise on the critical frequency of a…

统计力学 · 物理学 2010-03-24 I. Peleg , E. Barkai

Amplified spontaneous emission is a source of broadband noise that parasitically limits the achievable gain in laser amplifiers. While optical bandpass filtering elements can suppress these broadband noise contributions, such filters are…

光学 · 物理学 2021-02-03 Jacob Pettine , Miao Zhu , Dana Z. Anderson

A general formula for current noise in a two-terminal ballistic nondegenerate conductor under the action of long-range Coulomb correlations has been derived. The noise reduction factor (in respect to the uncorrelated value) is obtained for…

介观与纳米尺度物理 · 物理学 2007-05-23 O. M. Bulashenko , J. M. Rubi , V. A. Kochelap

The effect of noise in the input data for learning potential energy surfaces (PESs) based on neural networks for chemical applications is assessed. Noise in energies and forces can result from aleatoric and epistemic errors in the quantum…

化学物理 · 物理学 2023-09-12 S. Goswami , S. Käser , R. J. Bemish , M. Meuwly

Quantum mechanics imposes that any amplifier that works independently on the phase of the input signal has to introduce some excess noise. The impossibility of such a noiseless amplifier is rooted into unitarity and linearity of quantum…

In this paper we study the origin and the effect of amplitude and phase noise on Laser Optical Feedback Imaging (LOFI) associated with Synthetic Aperture (SA) imaging system. Amplitude noise corresponds to photon noise and acts as an…

This work explores the effect of noisy sample selection in active learning strategies. We show on both synthetic problems and real-life use-cases that knowledge of the sample noise can significantly improve the performance of active…

机器学习 · 统计学 2022-10-25 Alexandre Abraham , Léo Dreyfus-Schmidt

Optical absorption measurements characterize a wide variety of systems from atomic gases to \emph{in-vivo} diagnostics of living organisms. Here we study the potential of non-classical techniques to reduce statistical noise below the…

We investigate the effect of tuning the phonon energy on the correlation effects in models of electron-phonon interactions using DMFT. In the regime where itinerant electrons, instantaneous electron-phonon driven correlations and static…

强关联电子 · 物理学 2015-05-13 J. P. Hague , N. d'Ambrumenil

We have analyzed the interplay between an externally added noise and the intrinsic noise of systems that relax fast towards a stationary state, and found that increasing the intensity of the external noise can reduce the total noise of the…

凝聚态物理 · 物理学 2009-11-07 J. M. G. Vilar , J. M. Rubi

We demonstrate a new tool for filtering technical and electronic noises from pulses of light, especially relevant for signal processing methods in quantum optics experiments as a means to achieve the shot-noise level and reduce strong…

We observe asymmetric transition rates between Zeeman levels (spin-flips) of magnetically trapped atoms. The asymmetry strongly depends on the spectral shape of an applied noise. This effect follows from the interplay between the internal…

量子物理 · 物理学 2010-11-12 S. Machluf , J. Coslovsky , P. G. Petrov , Y. Japha , R. Folman

We theoretically evaluate the impact of drift-free noise on the dynamics of $\mathcal{PT}$-symmetric non-Hermitian systems with an exceptional point, which have recently been proposed for sensors. Such systems are currently considered as…

光学 · 物理学 2019-07-11 Christian Wolff , Christos Tserkezis , N. Asger Mortensen

We study the noise effects in a driven system of globally coupled oscillators, with particular attention to the interplay between driving and noise. The self-consistency equation for the order parameter, which measures the collective…

统计力学 · 物理学 2009-10-31 H. Hong , M. Y. Choi , K. Park , B. -G. Yoon , K. -S. Soh

Plenty of artifact removal tools and pipelines have been developed to correct the EEG recordings and discover the values below the waveforms. Without visual inspection from the experts, it is susceptible to derive improper preprocessing…

神经元与认知 · 定量生物学 2023-12-13 Shiang Hu , Jie Ruan , Juan Hou , Pedro Antonio Valdes-Sosa , Zhao Lv

With the proliferation of algorithmic decision-making, increased scrutiny has been placed on these systems. This paper explores the relationship between the quality of the training data and the overall fairness of the models trained with…

计算机视觉与模式识别 · 计算机科学 2023-05-03 Aki Barry , Lei Han , Gianluca Demartini