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Consider a photon that has just emerged from a linear polarizing filter. If the photon is then subjected to an orthogonal polarization measurement-e.g., horizontal vs vertical-the photon's preparation cannot be fully expressed in the…

Quantum Physics · Physics 2013-01-11 William K. Wootters

We study the polarization of an electron scattered by different static potentials. The initial state of the electron is chosen as a wavepacket to construct the definite orbital angular momentum, and the final polarization of the electron,…

High Energy Physics - Phenomenology · Physics 2024-11-21 Hao-Hao Peng , Ren-Hong Fang

The algorithm is described, which have been used for photo-polarimetric monitoring of various astronomical objects - cataclysmic variables, asteroids, comets.

Instrumentation and Methods for Astrophysics · Physics 2017-01-18 Sergey V. Kolesnikov , Vitalii V. Breus , Nickolay N. Kiselev , Ivan L. Andronov

The polarization of light conveys unique information that can be exploited by crucial applications. The bulky and costly discrete optical components used in conventional polarimeters limit their broad adoption. A compact, low-cost…

Applied Physics · Physics 2019-03-27 Zhongjin Lin , Leslie Rusch , Yuxuan Chen , Wei Shi

We present analytical and numerical calculations for the photon polarization tensor at finite temperature and density in a constant magnetic field. We first discuss the tensor decomposition in the presence of the magnetic field, which…

High Energy Physics - Phenomenology · Physics 2025-11-05 Kenji Fukushima , Yoshimasa Hidaka , Tomoya Uji

We re-consider the polarization of the star light that may arise during microlensing events due to the high gradient of magnification across the atmosphere of the source star, by exploring the full range of microlensing and stellar physical…

Solar and Stellar Astrophysics · Physics 2015-06-23 G. Ingrosso , S. Calchi Novati , F. De Paolis , Ph. Jetzer , A. A. Nucita , F. Strafella

We introduce a new family of estimators for unnormalized statistical models. Our family of estimators is parameterized by two nonlinear functions and uses a single sample from an auxiliary distribution, generalizing Maximum Likelihood Monte…

Machine Learning · Computer Science 2012-03-19 Miika Pihlaja , Michael Gutmann , Aapo Hyvarinen

Using a portable star tracking system, we are able to obtain the geographical position of the observer, longitude, latitude and North direction. In this work, a new optimization method has been applied to improve accuracy in calculation of…

Instrumentation and Methods for Astrophysics · Physics 2018-08-02 Meysam Izadmehr , Mehdi Khakian Ghom

Profile comparison of the Stokes parameters $V$ and $I$ is a powerful tool for maser data analysis, providing the first direct methods for unambiguous determination of (1) the maser saturation stage, (2) the amplification optical depth and…

Astrophysics · Physics 2009-10-30 Moshe Elitzur

We propose a formal resource-theoretic approach to quantify the degree of polarization of two and three-dimensional random electromagnetic fields. This endows the space of spectral polarization matrices with the orders induced by…

Quantum Physics · Physics 2018-02-07 G. M. Bosyk , G. Bellomo , A. Luis

A sequential measurement of two non-commuting quantum observables results in a joint probability distribution for all output combinations that can be explained in terms of an initial joint quasi-probability of the non-commuting observables,…

Quantum Physics · Physics 2016-10-27 Yutaro Suzuki , Masataka Iinuma , Holger F. Hofmann

The polarization measure is the probability that among 3 individuals chosen at random from a finite population exactly 2 come from the same class. This index is maximum at the midpoints of the edges of the probability simplex. We compute…

Statistics Theory · Mathematics 2015-04-22 Giovanni Pistone , Maria Piera Rogantin

In-line polarimeters perform non-destructive polarization measurements of optical signals, and play a critical role in monitoring and controlling the polarization environment in for example optical networks. While current in-line…

Optics · Physics 2015-12-10 J. P. Balthasar Müller , Kristjan Leosson , Federico Capasso

The feasibility of complete photoionization experiments, in which the full set of photoionization matrix elements are determined, using multiphoton ionization schemes with polarization-shaped pulses has recently been demonstrated [Hockett…

Atomic Physics · Physics 2015-07-22 P. Hockett , M. Wollenhaupt , C. Lux , T. Baumert

We present a novel approach to precisely synthesize arbitrary polarization states of light with a high modulation bandwidth. Our approach consists of superimposing two laser light fields with the same wavelength, but with opposite circular…

The results of numerical calculations of linear polarization from magnetized spherical optically thick and optically thin envelopes are presented. We give the methods how to distinguish magnetized optically thin envelopes from optically…

Astrophysics · Physics 2009-11-10 Yu. N. Gnedin , N. A. Silant'ev , M. Yu. Piotrovich , M. A. Pogodin

Snapshot polarization imaging calculates polarization states from linearly polarized subimages. To achieve this, a polarization camera employs a double Bayer-patterned sensor to capture both color and polarization. It demonstrates low light…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Inseung Hwang , Kiseok Choi , Hyunho Ha , Min H. Kim

X-ray binaries hosting a compact object have been among the main targets of the Imaging X-ray Polarimetry Explorer (IXPE) since its launch, due to their high brightness in the 2-8 keV energy band. The spectropolarimetric analysis performed…

High Energy Astrophysical Phenomena · Physics 2024-01-30 R. Farinelli , A. Waghmare , L. Ducci , A. Santangelo

We will present a method of implementation of general projective measurement of two-photon polarization state with the use of linear optics elements only. The scheme presented succeeds with a probability of at least 1/16. For some specific…

Quantum Physics · Physics 2016-09-08 Andrzej Grudka , Antoni Wojcik

In recent years, handheld and portable terahertz instruments have been in rapid development for various applications ranging from non-destructive testing to biomedical imaging and sensing. For instance, we have deployed our Portable…

Optics · Physics 2024-03-22 Zachery B. Harris , Kuangyi Xu , M. Hassan Arbab