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Here, we demonstrate the radiative polarization of high-energy electron beams in collisions with ultrashort pulsed bi-chromatic laser fields. Employing a Boltzmann kinetic approach for the electron distribution allows us to simulate the…

Plasma Physics · Physics 2019-12-06 Daniel Seipt , Dario Del Sorbo , Christopher P. Ridgers , Alec G. R. Thomas

We report on polarimetric observations of 100 pulsars centered on 774 MHz, made using the Green Bank Telescope, presenting their polarization profiles and polarized flux densities and comparing them with previous observations when possible.…

Solar and Stellar Astrophysics · Physics 2009-03-25 J. L. Han , P. B. Demorest , W. van Straten , A. G. Lyne

Reducing energy dissipation while increasing speed in computation and memory is a long-standing challenge for spintronics research. In the last 20 years, femtosecond lasers have emerged as a tool to control the magnetization in specific…

The use of nuclear spins as physical sensing systems is disadvantaged by their low signal responsivity, particularly when compared to sensing techniques based on electron spins. This primarily results from the small nuclear gyromagnetic…

We propose a self-consistent model which utilizes the polarization vector to theoretically describe the evolution of spin polarization of relativistic electrons in an intense electromagnetic field. The variation of radiative polarization…

Plasma Physics · Physics 2021-07-02 Yuhui Tang , Zheng Gong , Jinqing Yu , Yinren Shou , Xueqing Yan

Spin polarized carriers electrically injected into a magnet from an external polarizer can exert a spin transfer torque (STT) on the magnetization. The phe- nomenon belongs to the area of spintronics research focusing on manipulating…

Materials Science · Physics 2015-06-05 N. Tesarova , P. Nemec , E. Rozkotova , J. Zemen , F. Trojanek , K. Olejnik , V. Novak , P. Maly , T. Jungwirth

We experimentally demonstrate the joint optimization of transmitter and receiver parameters in directly modulated laser systems, showing superior performance compared to nonlinear receiver-only equalization while using fewer memory taps,…

Signal Processing · Electrical Eng. & Systems 2024-10-24 Sergio Hernandez , Christophe Peucheret , Francesco Da Ros , Darko Zibar

Electrical manipulation of spin-polarized current is highly desirable yet tremendously challenging in developing ultracompact spintronic device technology. Here we propose a scheme to realize the all-electrical manipulation of…

Mesoscale and Nanoscale Physics · Physics 2024-09-19 Rui Peng , Jin Yang , Lin Hu , Wee-Liat Ong , Pin Ho , Chit Siong Lau , Junwei Liu , Yee Sin Ang

The spin-dependent electron transmission through a helical membrane with account of linear spin-orbit interaction has been investigated by numerically solving the Schr\"odinger equation in cylindrical coordinates . It is shown that the spin…

Mesoscale and Nanoscale Physics · Physics 2017-03-07 Guo-Hua Liang , Yong-Long Wang , Hua Jiang , Meng-Yun Lai , Hong-Shi Zong

We report spin amplification using a capacitive beam splitter in n-type GaAs where the spin polarization is monitored via transverse electron focusing measurement. It is shown that partially spin-polarized current injected by the emitter…

Mesoscale and Nanoscale Physics · Physics 2018-03-29 Chengyu Yan , Sanjeev Kumar , Kalarikad Thomas , Patrick See , Ian Farrer , David Ritchie , Jonathan Griffiths , Geraint Jones , Michael Pepper

We study the longitudinal spin polarization of a relativistic fluid of massive spin-1/2 particles undergoing a boost-invariant expansion in the longitudinal direction and rotating in the transverse plane. We express the polarization vector…

Nuclear Theory · Physics 2025-03-18 Nora Weickgenannt , Jean-Paul Blaizot

Optically addressable spins are actively investigated in quantum communication, processing and sensing. Optical and spin coherence lifetimes, which determine quantum operation fidelity and storage time, are often limited by spin-spin…

Ultrashort spin current pulses have a great potential of becoming the carriers of information in future ultrafast spintronics. They present the outstanding property of an extremely compressed time profile, which can allow for the building…

Materials Science · Physics 2018-03-28 Marco Battiato

We investigate the coupling of the spin angular momentum of light beams with elliptical polarization to the spin degree of freedom of free electrons. It is shown that this coupling, which is of similar origin as the well-known spin-orbit…

Quantum Physics · Physics 2014-11-04 Heiko Bauke , Sven Ahrens , Rainer Grobe

Spatial light modulators are versatile devices employed in a vast range of applications to modify the transverse phase or amplitude profile of an incident light beam. Most experiments are designed to use a specific polarization which…

Quantum Physics · Physics 2014-05-06 G. Barreto Lemos , J. O. de Almeida , S. P. Walborn , P. H. Souto Ribeiro , M. Hor-Meyll

Resonant laser scattering along with photon correlation measurements have established the atom-like character of quantum dots. Here, we present measurements which challenge this identification for a wide range of experimental parameters:…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 C. Latta , A. Högele , Y. Zhao , A. N. Vamivakas , P. Maletinsky , M. Kroner , J. Dreiser , I. Carusotto , A. Badolato , D. Schuh , W. Wegscheider , M. Atature , A. Imamoglu

The nanoscale mode volumes of surface plasmon polaritons have enabled plasmonic lasers and condensates with ultrafast operation. Most plasmonic lasers are based on noble metals, rendering the optical mode structure inert to external fields.…

The interaction between a quantum particle's spin angular momentum and its orbital angular momentum is ubiquitous in nature. In optics, the spin-orbit optical phenomenon is closely related with the light-matter interaction and has been of…

We present a setup for highly polarized proton beams using two parallel propagating laser pulses that have a carrier envelope phase difference of $\pi$. This mechanism is examined utilizing particle-in-cell simulations and compared to a…

Plasma Physics · Physics 2022-08-19 Lars Reichwein , Markus Büscher , Alexander Pukhov

We utilize top polarization in the process e+ e-\rightarrow t\bar{t} at the ILC with transverse beam polarization to probe interactions of the scalar and tensor type beyond the standard model and to disentangle their individual…

High Energy Physics - Phenomenology · Physics 2011-02-01 B. Ananthanarayan , Monalisa Patra , Saurabh D. Rindani
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