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We propose a filter method to generate electron beams of high polarization from bubble and blow-out wakefield accelerators. The mechanism is based on the idea to identify all electron-beam subsets with low-polarization and to filter them…

In this paper, building upon the discovery of asymmetric rectified electric fields (AREF) in recent experiments [S.H. Hashemi et al., Physical Review Letters 121, 185504 (2018)], we explore the generation of AREF by applying a sawtooth-like…

软凝聚态物质 · 物理学 2024-04-24 A. Barnaveli , R. van Roij

We consider the Ensemble Kalman Inversion which has been recently introduced as an efficient, gradient-free optimisation method to estimate unknown parameters in an inverse setting. In the case of large data sets, the Ensemble Kalman…

数值分析 · 数学 2023-12-05 Matei Hanu , Jonas Latz , Claudia Schillings

Magnetic media remain a key in information storage and processing. The continuous increase of storage densities and the desire for quantum memories and computers pushes the limits of magnetic characterisation techniques. Ultimately, a tool…

Collective ferromagnetic motion in a conducting medium is damped by the transfer of the magnetic moment and energy to the itinerant carriers. We present a calculation of the corresponding magnetization relaxation as a linear-response…

介观与纳米尺度物理 · 物理学 2009-11-10 Yaroslav Tserkovnyak , Gregory A. Fiete , Bertrand I. Halperin

We observe quantum beats with periodic revivals due to non-linear spacing of Zeeman levels in the ground state of potassium atoms and demonstrate their synchronous optical pumping by double modulation of the pumping light at the Larmor…

原子物理 · 物理学 2009-11-13 S. J. Seltzer , P. J. Meares , M. V. Romalis

This paper extends the treatment of system equivalent flux density (SEFD) in Sutinjo, A. T. et al. (2021) (Paper I) to interferometric phased array telescopes. The objective is to develop an SEFD formula involving only the most fundamental…

天体物理仪器与方法 · 物理学 2022-05-04 A. T. Sutinjo , D. C. X. Ung , M. Sokolowski , M. Kovaleva , S. McSweeney

We demonstrate a method to generate spatially homogeneous entangled, spin-squeezed states of atoms appropriate for maintaining a large amount of squeezing even after release into the arm of a matter-wave interferometer or other free space…

原子物理 · 物理学 2016-12-07 Kevin C. Cox , Graham P. Greve , Baochen Wu , James K. Thompson

Centrosymmetric antiferromagnetic semiconductors, although abundant in nature, seem less promising than ferromagnets and ferroelectrics for practical applications in semiconductor spintronics. As a matter of fact, the lack of spontaneous…

材料科学 · 物理学 2022-10-31 Hong Jian Zhao , Xinran Liu , Yanchao Wang , Yurong Yang , Laurent Bellaiche , Yanming Ma

Quantum particles sometimes cooperate to develop a macroscopically ordered state with extraordinary properties. Superconductivity and Bose-Einstein condensation are examples of such cooperative phenomena where macroscopic order appears…

介观与纳米尺度物理 · 物理学 2013-03-28 G. T. Noe , J. -H. Kim , J. Lee , Y. -D. Jho , Y. Wang , A. K. Wojcik , S. A. McGill , D. H. Reitze , A. A. Belyanin , J. Kono

Individual magnetic molecules are promising building blocks for quantum technologies because of their chemical tunability, nanoscale dimensions, and ability to self-assemble into ordered arrays. However, harnessing their properties in…

Spatio-temporal mode coupling in highly multimode physical systems permits new routes for exploring complex instabilities and forming coherent wave structures. We present here the first experimental demonstration of multiple geometric…

Heading errors of atomic magnetometers refer to the dependence of measurement results on the sensor orientation with respect to the external magnetic field. There are three main sources of such errors: the light shift effect, the linear…

原子物理 · 物理学 2025-02-20 Siqi Liu , Xueke Wang , Xiangdong Zhang , Wei Xiao , Dong Sheng

We propose a new universal mechanism that makes it possible to drive an individual atomic spin using a spin polarized scanning tunnel microscope (STM) with an oscillating electric signal. We show that the combination of the distance…

介观与纳米尺度物理 · 物理学 2017-11-15 J. L. Lado , A. Ferron , J. Fernandez-Rossier

We report on the magnetic and hyperthermia properties of iron nanoparticles synthesized by organometallic chemistry. They are 5.5 nm in diameter and display a saturation magnetization close to the bulk one. Magnetic properties are dominated…

材料科学 · 物理学 2015-05-14 B. Mehdaoui , A. Meffre , L. -M. Lacroix , J. Carrey , S. Lachaize , M. Respaud , M. Gougeon , B. Chaudret

In this paper, we consider a mixed ensemble containing a mixture of cesium-type and hydrogen maser-type atomic clocks. For the mixed ensemble, the conventional Kalman filtering algorithm has certain limitations due to divergence of the…

系统与控制 · 电气工程与系统科学 2026-05-26 Priyanka Dey , Takahiro Kawaguchi , Yuichiro Yano , Yuko Hanado , Takayuki Ishizaki

The nonlinear Zeeman effect can induce splitting and asymmetries of magnetic-resonance lines in the geophysical magnetic field range. This is a major source of "heading error" for scalar atomic magnetometers. We demonstrate a method to…

原子物理 · 物理学 2018-01-24 Guzhi Bao , Arne Wickenbrock , Simon Rochester , Dmitry Budker

The nonlinear magneto-optical effect has significantly impacted modern society with prolific applications ranging from precision mapping of the Earth's magnetic field to bio-magnetic sensing. Pioneering works on collisional spin-exchange…

光学 · 物理学 2016-09-05 Feng Zhou , Chengjie Zhu , E. W. Hagley , L. Deng

Control of the polarization of microwave fields is a key experimental capability for a number of atomic physics platforms. However, producing high-fidelity microwaves requires a well-controlled microwave environment, where reflections that…

原子物理 · 物理学 2025-08-12 Deniz Kurdak , Yaxin Li , Patrick R. Banner , J. V. Porto , S. L. Rolston

Approximate message passing (AMP) is a scalable, iterative approach to signal recovery. For structured random measurement ensembles, including independent and identically distributed (i.i.d.) Gaussian and rotationally-invariant matrices,…

信息论 · 计算机科学 2023-06-27 Dang Qua Nguyen , Taejoon Kim