Results 61 to 70 of about 358,541 (195)

Correlation function of spin noise due to atomic diffusion

, 2017
We use paramagnetic Faraday rotation to study spin noise spectrum from unpolarized Rb vapor in a tightly focused probe beam in the presence of N$_2$ buffer gas.
Dural, N., Lucivero, V. G., McDonough, N. D., Romalis, M. V.   +3 more
core   +1 more source

Universal interference-based construction of Gaussian operations in hybrid quantum systems

npj Quantum Information, 2022
Beam-splitter operations are an indispensable resource for processing quantum information encoded in bosonic modes. In hybrid quantum systems, however, it can be challenging to implement reliable beam-splitters between two distinct modes due to various ...
Mengzhen Zhang, Shoumik Chowdhury, Liang Jiang   +2 more
doaj   +1 more source

A Simple Analytical Model of the Angular Momentum Transformation in Strongly Focused Light Beams

, 2009
A ray-optics model is proposed to describe the vector beam transformation in a strongly focusing optical system. In contrast to usual approaches basing on the focused field distribution near the focal plane, we employ the transformed beam pattern formed ...
A. Bekshaev, A. Bekshaev, A. T. O’Neil, A. Ya. Bekshaev, A. Ya. Bekshaev, A. Ya. Bekshaev, A. Ya. Bekshaev, B. Chen, B. Richards, E. Wolf, H. He, J. D. Jackson, L. Allen, L. Allen, M. Born, M. R. Dennis, M. S. Soskin, M. V. Berry, M. V. Berry, N. B. Simpson, P. B. Monteiro, S. Franke-Arnold, S. M. Barnett, T. A. Nieminen, T. A. Nieminen, T. A. Nieminen, V. Garces-Chavez, W. A. Shurkliff, Y. Zhao, Z. Bomzon   +29 more
core   +1 more source

The influence of beam delivery uncertainty on dose uniformity and penumbra for pencil beam scanning in carbon-ion radiotherapy.

PLoS ONE, 2021
The dose uniformity and penumbra in the treatment field are important factors in radiotherapy, which affects the outcomes of radiotherapy. In this study, the integrated depth-dose-distributions (IDDDs) of 190 MeV/u and 260 MeV/u carbon beams in the ...
Yue Li, Yunzhe Gao, Xinguo Liu, Jian Shi, Jiawen Xia, Jiancheng Yang, Lijun Mao   +6 more
doaj   +1 more source

Non-Gaussian states from continuous-wave Gaussian light sources

, 2006
We present a general analysis of the state obtained by subjecting the output from a continuous-wave (cw) Gaussian field to non-Gaussian measurements. The generic multimode state of cw Gaussian fields is characterized by an infinite dimensional covariance
C. W. Gardiner, Klaus Mølmer, U. Leonhardt   +2 more
core   +1 more source

Biaxial Gaussian Beams, Hermite–Gaussian Beams, and Laguerre–Gaussian Vortex Beams in Isotropy-Broken Materials

Photonics
We have developed the paraxial approximation for electromagnetic fields in arbitrary isotropy-broken media in terms of the ray–wave tilt and the curvature of materials’ Fresnel wave surfaces. We have obtained solutions of the paraxial equation in the form of biaxial Gaussian beams, which is a novel class of electromagnetic field distributions in ...
openaire   +3 more sources

Off-axis retrieval of orbital angular momentum of light stored in cold atoms

, 2014
We report on the storage of orbital angu- lar momentum (OAM) of light of a Laguerre-Gaussian mode in an ensemble of cold cesium atoms and its re- trieval along an axis different from the incident light beam.
Barbosa, P. S., Barreiro, S., Bloch, D., de Oliveira, R. A., Felinto, D., Martins, W. S., Pruvost, L., Tabosa, J. W. R.   +7 more
core   +4 more sources

Research on the Superposition Evolution of Double Laguerre–Gaussian Modes Based on Astigmatic Mode Conversion

Photonics
In this paper, the evolution of the beam from the double Hermite–Gaussian beam superposition state to the double Laguerre–Gaussian beam superposition state is realized based on the astigmatism conversion. Firstly, the tunable output of the double Hermite–
Lingmin Zhao, Jingliang Liu, Jiaxin Yuan, Yongji Yu, Guangyong Jin, Xinyu Chen   +5 more
doaj   +1 more source

A 300 GHz "Always-in-Focus" Focusing System for Target Detection [PDF]

, 2013
A focusing system for a 300 GHz radar with 5 m target distance and 10 mm diameter spot size resolution is proposed. The focusing system is based on a Gaussian telescope scheme and its main parameters have been de¬signed using Gaussian beam quasi-optical ...
Garcia-Muñoz, L. E., Montero-de-Paz, J., Segovia-Vargas, D.   +2 more
core   +1 more source

Modulation of the optical beam with orbital angular momentum in hot atomic rubidium vapor

AIP Advances, 2020
The effect of self-focusing and defocusing of the optical beam, which is caused by the interaction between a strong light field and medium, plays an important role in nonlinear optics.
Lei Zeng, Ming-Xin Dong, Ying-Hao Ye, Yi-Chen Yu, En-Ze Li, Wei-Hang Zhang, Kan Zhang, Dong-Sheng Ding, Bao-Sen Shi   +8 more
doaj   +1 more source