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The focusing of the radiation generated by a polarization current with a superluminally rotating distribution pattern is of a higher order in the plane of rotation than in other directions. Consequently, our previously published asymptotic…

天体物理学 · 物理学 2009-11-13 Houshang Ardavan , Arzhang Ardavan , John Singleton , Joseph Fasel , Andrea Schmidt

Impacts of spin-polarization of an ultrarelativistic electron beam head-on colliding with a strong laser pulse on emitted photon spectra and electron dynamics have been investigated in the quantum radiation regime. We simulate photon…

等离子体物理 · 物理学 2019-07-31 Yan-Fei Li , Ren-Tong Guo , Rashid Shaisultanov , Karen Z. Hatsagortsyan , Jian-Xing Li

In this paper, we study the spatiotemporal distribution of the photon electric field produced by the scattering of a single photon narrow pulse from a system of two identical qubits coupled to continuum modes in a one-dimensional (1D) open…

量子物理 · 物理学 2023-12-19 Ya. S. Greenberg , A. A. Shtygashev , A. G. Moiseev

We present a systematic study on linear propagation of ultrashort laser pulses in media with dispersion, dispersionless media and vacuum. The applied method of amplitude envelopes gives the opportunity to estimate the limits of slowly…

光学 · 物理学 2008-01-15 Lubomir M. Kovachev

We report a combined experimental and theoretical simulation of multiply scattered light dynamics in an ultracold gas of 85Rb atoms. Measurements of the spectral dependence of the time-decay of the scattered light intensity, following…

原子物理 · 物理学 2015-06-23 S. Balik , R. Olave , C. I. Sukenik , M. D. Havey , V. M. Datsuk , D. V. Kupriyanov , I. M. Sokolov

When atoms are coupled to a common electromagnetic environment, the exchange of photons through dipole-dipole interactions leads to the emergence of cooperative effects. As a particular example, superradiance arises from spontaneous…

量子物理 · 物理学 2024-09-11 Hanzhen Ma , Oriol Rubies-Bigorda , Susanne F. Yelin

We study the space-time structure of the scattered field induced by the scattering of a narrow single-photon Gaussian pulse on a qubit embedded in 1D open waveguide. For a weak excitation power we obtain explicit analytical expressions for…

量子物理 · 物理学 2023-01-31 Ya. S. Greenberg , A. G. Moiseev , A. A. Shtygashev

Owing to its numerical simplicity, a two-dimensional two-electron model atom, with each electron moving in one direction, is an ideal system to study non-perturbatively a fully correlated atom exposed to a laser field. Frequently made…

原子物理 · 物理学 2009-10-30 D. Bauer

We study the dynamics of single-photon absorption by a single emitter coupled to a one-dimensional waveguide that simultaneously provides channels for spontaneous emission decay and a channel for the input photon. We have developed a…

光学 · 物理学 2016-08-14 Yuntian Chen , Martijn Wubs , Jesper Mørk , A. Femius Koenderink

An atom in open space can be detected by means of resonant absorption and reemission of electromagnetic waves, known as resonance fluorescence, which is a fundamental phenomenon of quantum optics. We report on the observation of scattering…

We propose a new formulation for atomic side mode dynamics from super-radiant light scattering of trapped atoms. A detailed analysis of the recently observed super-radiant light scattering from trapped bose gases [S. Inouye {\it et al.},…

凝聚态物理 · 物理学 2009-10-31 Ozgur E. Mustecaplioglu , L. You

A time-resolved analysis of the amplitude and phase of THz pulses propagating through three-dimensional photonic crystals is presented. Single-cycle pulses of THz radiation allow measurements over a wide frequency range, spanning more than…

材料科学 · 物理学 2007-05-23 J. Gomez Rivas , A. Farre Benet , J. Niehusmann , P. Haring Bolivar , H. Kurz

We report observations of superradiance for atoms trapped in the near field of a photonic crystal waveguide (PCW). By fabricating the PCW with a band edge near the D$_1$ transition of atomic cesium, strong interaction is achieved between…

光学 · 物理学 2015-08-12 A. Goban , C. -L. Hung , J. D. Hood , S. -P. Yu , J. A. Muniz , O. Painter , H. J. Kimble

We experimentally and theoretically investigate collective radiative effects in an ensemble of cold atoms coupled to a single-mode optical nanofiber. Our analysis unveils the microscopic dynamics of the system, showing that collective…

Compton scattering of low-frequency radiation by an isotropic distribution of (i) mildly and (ii) ultra relativistic electrons is considered. It is shown that the ensemble-averaged differential cross-section in this case is noticeably…

天体物理学 · 物理学 2011-05-23 Sergei Y. Sazonov , Rashid A. Sunyaev

An analytical microscopic theory for the resonant multiple scattering of light by cold atoms with arbitrary internal degeneracy is presented. It permits to calculate the average amplitude and the average intensity for one-photon states of…

原子物理 · 物理学 2007-05-23 C. A. Mueller , C. Miniatura

We theoretically investigate resonant x-ray scattering from two non-interacting Ne+ ions driven by an intense attosecond pulse using a non-relativistic, QED-based time-dependent framework. Our model includes Rabi oscillations,…

原子物理 · 物理学 2026-05-13 Akilesh Venkatesh , Phay J. Ho

We investigate the dynamics of a 10 fs light pulse propagating in a random medium by the direct solution of the 3D Maxwell equations. Our approach employs molecular dynamics to generate a distribution of spherical scatterers and a parallel…

A detailed analysis of the photon emission spectra of an electron scattered by a laser pulse containing only very few cycles of the carrying electromagnetic field is presented. The analysis is performed in the framework of strong-field…

高能物理 - 唯象学 · 物理学 2011-03-21 F. Mackenroth , A. Di Piazza

We show that in atomic gases cooperative effects like superradiance and subradiance lead to a potential between two atoms that decays like $1/r$. In the case of superradiance, this potential is attractive for close enough atoms and can be…

介观与纳米尺度物理 · 物理学 2008-09-07 A. Gero , E. Akkermans