English
Related papers

Related papers: Probing atoms by periodically modulated electron b…

200 papers

Dielectric laser acceleration is a versatile scheme to accelerate and control electrons with the help of femtosecond laser pulses in nanophotonic structures. We demonstrate here the generation of a train of electron pulses with individual…

Accelerator Physics · Physics 2020-01-29 Norbert Schönenberger , Anna Mittelbach , Peyman Yousefi , Uwe Niedermayer , Peter Hommelhoff

A spin-polarizing electron beam splitter is described which relies on an arrangement of linearly polarized laser waves of nonrelativistic intensity. An incident electron beam is first coherently scattered off a bichromatic laser field,…

Quantum Physics · Physics 2017-02-22 Matthias M. Dellweg , Carsten Müller

A dense cloud of atoms with randomly changing positions exhibits coherent and incoherent scattering. We show that an atomic cloud of subwavelength dimensions can be modeled as a single scatterer where both coherent and incoherent components…

Quantum Physics · Physics 2021-06-30 Rasoul Alaee , Akbar Safari , Robert W. Boyd

The conventional picture of the light amplification by stimulated emission of radiation (laser) is broken under the ultrastrong interaction between the electromagnetic fields and matter, and distinct dynamics of the electric field and of…

Quantum Physics · Physics 2016-03-10 Motoaki Bamba , Tetsuo Ogawa

We investigate the quantum dynamics of an atomic mixture composed of two multi-atom ensembles. Each ensemble is driven separately by a coherent laser field, respectively, and dampens via the interactions with the environmental vacuum…

Quantum Physics · Physics 2017-06-02 Luling Jin , Jörg Evers , Mihai Macovei

We demonstrate the existence of new nonclassical correlations in the radiation of two atoms, which are coherently driven by a continuous laser source. The photon-photon-correlations of the fluorescence light show a spatial interferene…

Quantum Physics · Physics 2015-01-15 C. Skornia , J. von Zanthier , G. S. Agarwal , E. Werner , H. Walther

It is shown that the interaction of large amplitude electromagnetic waves with a hot electron-positron (e-p) plasma (a principal constituent of the universe in the MeV epoch) leads to a bunching of mass, energy, and angular momentum in…

Astrophysics · Physics 2009-10-31 T. Tatsuno , V. I. Berezhiani , S. M. Mahajan

With electron beam durations down to femtoseconds and sub-femtoseconds achievable in current state-of-the-art accelerators, longitudinal bunch length diagnostics with resolution at the attosecond level are required. In this paper, we…

X-ray free-electron lasers (XFELs) utilize high-density and high-energy electron bunches which are well-suited to produce Compton back-scattering radiation. Here we study back-scattered radiation pulses produced by the interaction of XFEL…

Accelerator Physics · Physics 2023-09-28 Eugene Bulyak , Svitozar Serkez , Gianluca Aldo Geloni

Collective coherent scattering of laser light by an ensemble of polarizable point particles creates long range interactions, whose properties can be tailored by choice of injected laser powers, frequencies and polarizations. We use a…

Quantum Physics · Physics 2015-06-17 Stefan Ostermann , Matthias Sonnleitner , Helmut Ritsch

It is shown that the charged particles are refracted and reflected on the boundary of field free and laser field regions in vacuum. Simple and transparent estimates are given which show the possibility of channeling of charged and neutral…

Accelerator Physics · Physics 2007-07-19 X. Artru , K. A. Ispirian , M. K. Ispiryan

The physics of critical phenomena in a many-body system far from thermal equilibrium is an interesting and important issue to be addressed both experimentally and theoretically. The trapped cold atoms have been actively used as a clean and…

Atomic Physics · Physics 2017-09-13 Geol Moon , Myoung-Sun Heo , Yonghee Kim , Heung-Ryoul Noh , Wonho Jhe

We review different attempts to show the decoherence process in double-slit-like experiments both for charged particles (electrons) and neutral particles with permanent dipole moments. Interference is studied when electrons or atomic…

Quantum Physics · Physics 2009-11-11 Fernando C. Lombardo , Paula I. Villar

In this paper we analyze atom lasers based on the spatial modulation of the scattering length of a Bose-Einstein Condensate. We demonstrate, through numerical simulations and approximate analytical methods, the controllable emission of…

Other Condensed Matter · Physics 2016-08-16 Alicia V. Carpentier , Humberto Michinel , María I. Rodas-Verde , Víctor M. Pérez-García

A new method for diagnosing the temporal characteristics of ultrashort electron bunches with linear energy chirp generated from a laser wakefield accelerator is described. When the ionization-injected bunch interacts with the back of the…

Plasma Physics · Physics 2016-06-29 C. J. Zhang , J. F. Hua , Y. Wan , B. Guo , C. -H. Pai , Y. P. Wu , F. Li , H. -H. Chu , Y. Q. Gu , W. B. Mori , C. Joshi , J. Wang , W. Lu

We theoretically study the inelastic electron-H($2s$) scattering in a linearly polarized laser field in the domain of high scattering energies and moderate field intensities. We investigate the angular distributions and the resonance…

Atomic Physics · Physics 2023-09-04 Gabriela Buica

Entanglement engineering plays a central role in quantum-enhanced technologies, with potential physical platforms that outperform their classical counterparts. However, free electrons remain largely unexplored despite their great capacity…

Quantum Physics · Physics 2020-11-12 Shahaf Asban , Javier García de Abajo

Controlling the wave function of free electrons is important to improve the spatial resolution of electron microscopes, the efficiency of electron interaction with sample modes of interest, and our ability to probe ultrafast materials…

Quantum Physics · Physics 2021-01-27 Valerio Di Giulio , F. Javier García de Abajo

We describe a simple technique to passively bunch non-ultrarelativistics ($\lesssim 10$~MeV) electron bunches produced in conventional photoinjectors. The scheme employs a dielectric-lined waveguide located downstream of the electron source…

Accelerator Physics · Physics 2014-12-16 F. Lemery , P. Piot

We experimentally observe the action of multiple light pulses on the transverse motion of a continuous beam of fullerenes. The light potential is generated by non-resonant ultra-short laser pulses in perpendicular spatial overlap with the…

Atomic and Molecular Clusters · Physics 2013-07-02 Paul Venn , Hendrik Ulbricht