English
Related papers

Related papers: Circular Polarization and Coherent Backscattering

200 papers

Polarization squeezing is shown to occur in non-degenerate parametric amplification of coherent light and the degree of squeezing at interaction time $T$ can be as large as $1-e^{-2T}$. This gives $86.4\%$ polarization squeezing for $T=1$…

Quantum Physics · Physics 2016-12-13 Namrata Shukla , Ranjana Prakash

We present an experimental and theoretical study of the angle- and polarization-dependent light extinction in random arrays of polydisperse semiconductor nanowires epitaxially grown on substrates. The specular reflectance is described by…

Optics · Physics 2013-11-05 Grzegorz Grzela , Djamila Hourlier , Jaime Gómez Rivas

We investigate the impact of instrumental systematic errors on the potential of cosmic microwave background polarization experiments targeting primordial B-modes. To do so, we introduce spin-weighted Muller matrix-valued fields describing…

Astrophysics · Physics 2008-11-26 Daniel O'Dea , Anthony Challinor , Bradley R. Johnson

Disk polarization at (sub)millimeter wavelengths is being revolutionized by ALMA observationally, but its origin remains uncertain. Dust scattering was recently recognized as a potential contributor to polarization, although its basic…

Solar and Stellar Astrophysics · Physics 2017-11-08 Haifeng Yang , Zhi-Yun Li , Leslie W. Looney , Josep M. Girart , Ian W. Stephens

We consider the reflection of non-polarized radiation from the point-like sources above the accretion discs both the optically thick and optically thin. We investigate the dependence of the polarization of reflected radiation on the…

Solar and Stellar Astrophysics · Physics 2018-06-26 N. A. Silant'ev , G. A. Alekseeva , V. V. Novikov

Recent spectropolarimetric observations of Herbig AeBe stellar systems show linear polarization variability with wavelength and epoch near their obscured H-alpha emission. Surprisingly, this polarization is not coincident with the H-alpha…

Astrophysics · Physics 2009-11-13 J. R. Kuhn , S. V. Berdyugina , D. M. Fluri , D. M. Harrington , J. O. Stenflo

We study the polarization properties of light emitted by quantum dots that are embedded in chiral photonic crystal structures made of achiral planar GaAs waveguides. A modification of the electromagnetic mode structure due to the chiral…

The theoretical possibility to use an electron microscope as a spin polarizer is studied. It turns out that a Bessel beam passing a standard magnetic objective lens is intrinsically spin polarized. In the limit of infinitely small detectors…

Quantum Physics · Physics 2015-12-08 Peter Schattschneider , Vincenzo Grillo

Non-equilibrium quantum rings emit circular polarized subterahertz radiation with a polarization degree controllable on nano- to picosecond time scales. This we conclude using a theory developed here for the time-dependent detection of the…

Quantum Physics · Physics 2009-11-13 A. S. Moskalenko , J. Berakdar

General expressions for the unpolarized differential cross section and for various polarization observables in the coherent pseudoscalar meson photo- and electroproduction on the deuteron target have been obtained in one-photon-exchange…

High Energy Physics - Phenomenology · Physics 2019-08-07 G. I. Gakh , A. G. Gakh , E. Tomasi-Gustafsson

In this paper, we extend the paraxial conical refraction model to the case of the partially coherent light using the unified optical coherence theory. We demonstrate the decomposition of conical refraction correlation functions into…

Optics · Physics 2022-05-12 V. Yu. Mylnikov , V. V. Dudelev , E. U. Rafailov , G. S. Sokolovskii

The polarization emerging in the subsequent scattering processes can never exceed $1$ which corresponds to the fully polarized pure state. This property is shown to be provided by the addition rule similar to that for relativistic…

Quantum Physics · Physics 2022-08-17 Oleg Teryaev

We present a detailed analytical and numerical analysis of the inelastic coherent backscattering spectrum of laser light incident on cold atoms. We identify frequency domains where the interference contribution can be positive \emph{as well…

Quantum Physics · Physics 2009-11-13 Vyacheslav Shatokhin , Thomas Wellens , Benoît Grémaud , Andreas Buchleitner

We propose a microscopic description for the polarization from the first principle through the spin-orbit coupling in particle collisions. The model is different from previous ones based on local equilibrium assumptions for the spin degree…

Nuclear Theory · Physics 2019-12-11 Jun-jie Zhang , Ren-hong Fang , Qun Wang , Xin-Nian Wang

We observed that the polarization state of light after round-trip propagation through a birefringent medium frequently aligns with the employed input polarization state "mirrored" by the horizontal plane of the Poincare sphere. In this…

An experiment is described that tests theoretical predictions on how C-lines incident obliquely on a surface behave on reflection. C-lines in a polarised wave are the analogues of the optical vortices carried by a complex scalar wave, which…

Optics · Physics 2015-06-18 W. Löffler , J. F. Nye , J. H. Hannay

We study the loop-induced circularly polarized gamma rays from dark matter annihilation using the effective dark matter theory approach. Both neutral scalar and fermionic dark matter annihilating into monochromatic diphoton and $Z$-photon…

High Energy Physics - Phenomenology · Physics 2020-01-08 Wei-Chih Huang , Kin-Wang Ng , Tzu-Chiang Yuan

A relativistic electron-positron beam propagating through a magnetized electron-ion plasma is shown to generate both circularly and linearly polarized synchrotron radiation. The degrees of circular and linear polarizations depend both on…

Plasma Physics · Physics 2019-05-29 Ujjwal Sinha , Christoph H. Keitel , Naveen Kumar

A theoretical study of the coherent light scattering from disordered photonic crystal is presented. In addition to the conventional enhancement of the reflected light intensity into the backscattering direction, the so called coherent…

Disordered Systems and Neural Networks · Physics 2009-10-31 A. Y. Sivachenko , M. E. Raikh , Z. V. Vardeny

We investigate the tolerance for systematic errors in lensing analysis applied to a patchwork map of Cosmic Microwave Background polarization. We focus on the properties of the individual polarization maps that comprise the patchwork and…

Cosmology and Nongalactic Astrophysics · Physics 2024-08-27 Ryo Nagata , Toshiya Namikawa