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Semiconductor spin noise spectroscopy (SNS) has emerged as a unique experimental tool that utilizes spin fluctuations to provide profound insight into undisturbed spin dynamics in doped semiconductors and semiconductor nanostructures. The…

Mesoscale and Nanoscale Physics · Physics 2011-03-28 G. M. Müller , M. Oestreich , M. Römer , J. Hübner

Spin Noise Spectroscopy (SNS) is an experimental approach to obtain correlators of mesoscopic spin fluctuations in time by purely optical means. We explore the information that this technique can provide when it is applied to a weakly…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Fuxiang Li , Yuriy V. Pershin , Valeriy A. Slipko , Nikolai A. Sinitsyn

The optical spin noise spectroscopy (SNS) is a minimally invasive route towards obtaining dynamical information about electrons and atomic gases by measuring mesoscopic time-dependent spin fluctuations. Recent improvements of the…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 Fuxiang Li , Avadh Saxena , Darryl Smith , Nikolai A. Sinitsyn

"Spin noise spectroscopy" (SNS) is a powerful optical technique for probing electron and hole spin dynamics that is based on detecting their intrinsic and random fluctuations while in thermal equilibrium, an approach guaranteed by the…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 Luyi Yang , P. Glasenapp , A. Greilich , D. R. Yakovlev , M. Bayer , S. A. Crooker

We explore the applications of spin noise spectroscopy (SNS) for detection of the spin properties of atomic ensembles in and out of equilibrium. In SNS, a linearly polarized far-detuned probe beam on passing through an ensemble of atomic…

Spin noise spectroscopy (SNS) is a new method for studying magnetic resonance and spin dynamics based on measuring the Faraday rotation noise. In strong contrast with methods of nonlinear optics, the spectroscopy of spin noise is considered…

Mesoscale and Nanoscale Physics · Physics 2015-04-28 M. M. Glazov , V. S. Zapasskii

We advance all optical spin noise spectroscopy (SNS) in semiconductors to detection bandwidths of several hundred gigahertz by employing an ingenious scheme of pulse trains from ultrafast laser oscillators as an optical probe. The ultrafast…

Mesoscale and Nanoscale Physics · Physics 2014-01-14 Fabian Berski , Hendrik Kuhn , Jan G. Lonnemann , Jens Hübner , Michael Oestreich

Direct measurements of spin fluctuations are becoming the mainstream approach for studies of complex condensed matter, molecular, nuclear, and atomic systems. This review covers recent progress in the field of optical Spin Noise…

Mesoscale and Nanoscale Physics · Physics 2016-10-14 N. A. Sinitsyn , Y. V. Pershin

Spin noise spectroscopy is a technique to measure magnetization fluctuations, a subject of increasing relevance in ultrafast spintronics. We investigate numerically the equilibrium spin noise of ferro- and antiferromagnets within an…

Materials Science · Physics 2024-11-28 Julius Schlegel , Martin Evers , Ulrich Nowak

Spin noise (SN) spectroscopy measurements on delicate semiconductor spin systems, like single InGaAs quantum dots, are currently not limited by optical shot noise but rather by the electronic noise of the detection system. Here, we report a…

Mesoscale and Nanoscale Physics · Physics 2018-03-14 Pavel Sterin , Julia Wiegand , Jens Hübner , Michael Oestreich

Spin noise spectroscopy is emerging as a powerful technique for studying the dynamics of various spin systems also beyond their thermal equilibrium and linear response. Here, we study spin fluctuations of room-temperature neutral atoms in a…

Atomic Physics · Physics 2021-07-21 V. Guarrera , R. Gartman , G. Bevilacqua , W. Chalupczak

Theory of spin noise in low dimensional systems and bulk semiconductors is reviewed. Spin noise is usually detected by optical means, continuously measuring the rotation angle of the polarization plane of the probe beam passing through the…

Mesoscale and Nanoscale Physics · Physics 2020-10-30 D. S. Smirnov , V. N. Mantsevich , M. M. Glazov

Spin noise spectroscopy has become a widespread technique to extract information on spin dynamics in atomic and solid-state systems, in a potentially non-invasive way, through the optical probing of spin fluctuations. Here we experimentally…

Scanning Electron Microscopy (SEM) is critical in nanotechnology, materials science, and biological imaging due to its high spatial resolution and depth of focus. Signal-to-noise ratio (SNR) is an essential parameter in SEM because it…

Machine Learning · Computer Science 2025-10-10 K. S. Sim , I. Bukhori , D. C. Y. Ong , K. B. Gan

Dynamic Vision Sensors (DVS) exhibit exceptional dynamic range and low power consumption, making them ideal for edge applications in the Internet of Video Things (IoVT). However, their output is often degraded by spurious Background…

Neural and Evolutionary Computing · Computer Science 2026-05-05 Yahan Yang , Pradeep Kumar Gopalakrishnan , Chang Chip Hong , Arindam Basu

Noise spectroscopy elucidates the fundamental noise sources in spin systems, thereby serving as an essential tool toward developing spin qubits with long coherence times for quantum information processing, communication, and sensing. But…

We advance spin noise spectroscopy to an ultrafast tool to resolve high frequency spin dynamics in semiconductors. The optical non-demolition experiment reveals the genuine origin of the inhomogeneous spin dephasing in n-doped GaAs wafers…

Mesoscale and Nanoscale Physics · Physics 2010-04-22 Georg M. Müller , Michael Römer , Jens Hübner , Michael Oestreich

Dynamic Vision Sensors (DVS) record "events" corresponding to pixel-level brightness changes, resulting in data-efficient representation of a dynamic visual scene. As DVS expand into increasingly diverse applications, non-ideal behaviors in…

Image and Video Processing · Electrical Eng. & Systems 2023-04-13 Brian McReynolds , Rui Graca , Tobi Delbruck

The intrinsic fluctuations of electron spins in semiconductors and atomic vapors generate a small, randomly-varying "spin noise" that can be detected by sensitive optical methods such as Faraday rotation. Recent studies have demonstrated…

Spiking Neural Networks (SNNs) aim at providing energy-efficient learning capabilities when implemented on neuromorphic chips with event-based Dynamic Vision Sensors (DVS). This paper studies the robustness of SNNs against adversarial…

Machine Learning · Computer Science 2021-09-07 Alberto Marchisio , Giacomo Pira , Maurizio Martina , Guido Masera , Muhammad Shafique
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