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Vacuum polarization corrections to the energy levels of bound electrons are calculated using a perturbative path integral formalism. We apply quantum electrodynamics in a framework which treats the strong binding nuclear field to all…

Atomic Physics · Physics 2023-09-26 Sreya Banerjee , Zoltán Harman

Ultralow emittance ($\leq20$ nm, normalized) electron beams with $10^5$ electrons per bunch are obtained by tightly focusing an ultrafast ($\sim$ 100 fs) laser pulse on the cathode of a 1.6 cell radiofrequency photoinjector. Taking…

Accelerator Physics · Physics 2017-04-19 Jared Maxson , David Cesar , Giacomo Calmasini , Alexander Ody , Pietro Musumeci , David Alesini

For injection of beams into circular machines with different horizontal and vertical emittance acceptance, the injection efficiency can be increased if these beams are flat, i.e. if they feature unequal transverse emittances. Generation of…

Accelerator Physics · Physics 2011-08-01 Lars Groening

Laser-driven brilliant controllable polarized $\gamma$-photon sources open the way for designing compact $\gamma\gamma$ collider, which enable the large yield of linear Breit-Wheeler (LBW) pairs in a single shot and thus provide an…

High Energy Physics - Phenomenology · Physics 2021-11-30 Qian Zhao , Liang Tang , Feng Wan , Bo-Chao Liu , Ruo-Yu Liu , Rui-Zhi Yang , Jin-Qing Yu , Xue-Guang Ren , Zhong-Feng Xu , Yong-Tao Zhao , Yong-Sheng Huang , Jian-Xing Li

In this review we consider three important applications of lasers in high energy physics: gamma gamma, gamma electron colliders, laser cooling, positron production. These topics are actual now due to plans of construction linear e+e-, e-e-,…

High Energy Physics - Experiment · Physics 2007-05-23 Valery Telnov

Pyroelectric crystals are used to produce self-focused electron beams with energies greater than 170 keV. No high voltage power supply or electron gun is needed. The system works by simply changing the temperature of a crystal of LiNbO3 or…

Plasma Physics · Physics 2007-05-23 James D. Brownridge , Stephen M. Shafroth

Propagation features of circularly polarized (CP) electromagnetic waves in magnetized plasmas are determined by the plasma density and the magnetic field strength. This property can be applied to design a unique plasma photonic device for…

Plasma Physics · Physics 2020-12-30 Takayoshi Sano , Yusuke Tatsumi , Masayasu Hata , Yasuhiko Sentoku

Vector vortex beams are a class of optical beams with singularities in their space-variant polarization. Vector vortex beam lasers have applications in many areas including imaging and communication, where vertical-cavity lasers emitting…

Optics · Physics 2020-10-05 Jiaqi Hu , Seonghoon Kim , Christian Schneider , Sven Höfling , Hui Deng

Radiative corrections to the parity-violating asymmetry measured in elastic electron-proton scattering are analyzed in the framework of the Standard Model. We include the complete set of one-loop contributions to one quark current…

Nuclear Theory · Physics 2007-05-23 S. Barkanova , A. Aleksejevs , P. G. Blunden

We demonstrate a method to create potential barriers with polarized light beams for polaritons in semiconductor microcavities. The form of the barriers is engineered via the real space shape of a focalised beam on the sample. Their height…

Mesoscale and Nanoscale Physics · Physics 2010-11-30 A Amo , S Pigeon , C Adrados , R Houdre , E Giacobino , C Ciuti , A Bramati

Polarized electron beam production via laser wakefield acceleration in pre-polarized plasma is investigated by particle-in-cell simulations. The evolution of the electron beam polarization is studied based on the…

Plasma Physics · Physics 2024-11-20 L. R. Yin , X. F. Li , Y. J. Gu , N. Cao , Q. Kong , M. Buescher , S. M. Weng , M. Chen , Z. M. Sheng

Structured light, particularly in the terahertz frequency range, holds considerable potential for a diverse range of applications. However, the generation and control of structured terahertz radiation pose major challenges. In this work, we…

The annular electron beam has significant practical potential in high-energy physics and condensed matter physics, which can be used to edge-enhancement electron imaging, collimation of antiprotons in conventional linear accelerators,…

Plasma Physics · Physics 2024-10-15 Yangchun Liu , Dong Wu , Tianyi Liang , Zhengmao Sheng , Xiantu He

We investigate, both theoretically and experimentally, the phenomenon of polarization rotation of a weak, linearly-polarized optical (probe) field in an atomic system with multiple three-level electromagnetically induced transparency (EIT)…

Quantum Physics · Physics 2009-11-13 Shujing Li , Bo Wang , Xudong Yang , Yanxu Han , Hai Wang , Min Xiao , K. C. Peng

Laser-based electron acceleration is attracting strong interest from the conventional accelerator community due to its outstanding characteristics in terms of high initial energy, low emittance and high beam current. Unfortunately, such…

Experiments in long distance quantum key distribution have motivated the development of ruggedised single photon sources, capable of producing useful correlations even when removed from the warm, nurturing environment found in most optics…

Quantum Physics · Physics 2015-04-02 James A. Grieve , Robert Bedington , Alexander Ling

1.5D Particle-In-Cell simulations of a hot, low density electron beam injected into magnetized, maxwellian plasma were used to further explore the alternative non-gyrotropic beam driven electromagnetic emission mechanism, first studied in…

Solar and Stellar Astrophysics · Physics 2014-04-07 Roman Pechhacker , David Tsiklauri

We present a detailed study of the six-dimensional phase space of the electron beam produced by the Cornell Energy Recovery Linac Photoinjector, a high-brightness, high repetition rate (1.3 GHz) DC photoemission source designed to drive a…

The generation of entangled photons from radiative cascades has enabled milestone experiments in quantum information science with several applications in photonic quantum technologies. Significant efforts are being devoted to pushing the…

Transmission electron microscopes use electrons with wavelengths of a few picometers, potentially capable of imaging individual atoms in solids at a resolution ultimately set by the intrinsic size of an atom. Unfortunately, due to…

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